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BoB Office Assistant practice questions

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Question 1Reasoning Ability

A bank office assistant is told that all loan files must be stamped before they are scanned. A file is scanned but not stamped. Which conclusion follows logically?

  1. The file must be re-scanned later
  2. The file was not a loan file Correct answer.
  3. The file was stamped after scanning
  4. The file is a loan file that was mistakenly scanned

Explanation

The rule states stamping is a precondition for scanning any loan file. If a file reached the scanning stage without a stamp, it cannot have been a loan file, because that would violate the stated rule.

Question 2Reasoning Ability

In the office filing code, every reference number ends with a letter, and every letter is preceded by two digits. A file shows reference number 4821K. Which part of the code violates the stated pattern?

  1. The presence of four digits Correct answer.
  2. The absence of a second letter
  3. The letter K at the end
  4. The starting digit 4

Explanation

The rule requires exactly two digits immediately before the final letter. The code 4821K has four digits before K, so the extra digits are the violation.

Question 3Reasoning Ability

A clerk arranges four folders on a shelf. The Accounts folder is to the left of the Bills folder. The Bills folder is to the left of the Claims folder. Where is the Accounts folder relative to the Claims folder?

  1. In the same position
  2. To the right
  3. To the left Correct answer.
  4. Cannot be determined

Explanation

Left-of relations are transitive. Accounts is left of Bills, and Bills is left of Claims, so Accounts must be left of Claims.

Question 4Reasoning Ability

An office assistant observes: Monday had more walk-in visitors than Tuesday; Wednesday had more than Monday; Thursday had fewer than Tuesday. Which day had the fewest visitors?

  1. Thursday Correct answer.
  2. Tuesday
  3. Wednesday
  4. Monday

Explanation

Ordering the days gives Wednesday above Monday, Monday above Tuesday, and Tuesday above Thursday. Thursday therefore sits at the bottom of the chain and had the fewest visitors.

Question 5Reasoning Ability

Find the next term in the sequence used to number archived boxes: 3, 6, 12, 24, ...

  1. 36
  2. 48 Correct answer.
  3. 60
  4. 30

Explanation

Each term is double the previous term. Doubling 24 gives 48, so the next box number is 48.

Question 6Reasoning Ability

A file clerk sorts records by a code where each letter stands for a digit: A=1, B=2, C=3. What does the code CAB represent as a three-digit number?

  1. 312 Correct answer.
  2. 231
  3. 321
  4. 123

Explanation

Substituting each letter in order gives C=3, A=1, B=2. Reading them in sequence produces the number 312.

Question 7Reasoning Ability

In a set of office memos, all urgent memos are marked red, and some red memos are confidential. Which statement is necessarily true?

  1. No urgent memo is confidential
  2. All confidential memos are urgent
  3. All red memos are urgent
  4. Some urgent memos may be confidential Correct answer.

Explanation

Urgent memos form a subset of red memos, and some red memos are confidential. It is therefore possible for an urgent memo to be confidential, though it is not guaranteed.

Question 8Reasoning Ability

A clerk notices that every time the printer jams, the paper tray was loaded the previous evening. Which statement best describes this observation?

  1. The printer never jams with morning loading
  2. Loading paper in the evening causes jams
  3. Jams and evening loading are correlated in the observed cases Correct answer.
  4. Evening loading is unrelated to jams

Explanation

The observation is a correlation: the two events appeared together in each recorded case. Correlation alone does not prove that evening loading causes jams, so the cautious description is best.

Question 9Reasoning Ability

Three assistants-P, Q, and R-each handle one task: filing, scanning, or mailing. P does not file. Q scans. R does not mail. Who files?

  1. Q
  2. R Correct answer.
  3. Cannot be determined
  4. P

Explanation

Q scans, leaving filing and mailing for P and R. Since P does not file, P must mail, and R must file. R filing is also consistent with R not mailing.

Question 10Reasoning Ability

A code shifts each letter of an office keyword forward by two positions in the alphabet, so A becomes C. What is the coded form of the word FILE?

  1. G K N G
  2. H K N G Correct answer.
  3. H K N E
  4. H J N G

Explanation

Shifting each letter forward by two: F becomes H, I becomes K, L becomes N, and E becomes G. The coded word is HKNG.

Question 11Reasoning Ability

Five files are stacked. The Budget file is above the Audit file. The Claims file is below the Audit file. The Data file is above the Budget file. Which file is at the top of the stack?

  1. Budget
  2. Claims
  3. Audit
  4. Data Correct answer.

Explanation

The chain runs Data above Budget, Budget above Audit, and Audit above Claims. Data sits highest in this chain, so it is at the top.

Question 12Reasoning Ability

A clerk must arrange three training sessions-Records, Phones, and Safety-on three days. Safety cannot be on day one, and Records must be on day two. Which arrangement is valid?

  1. Day1 Safety, Day2 Phones, Day3 Records
  2. Day1 Safety, Day2 Records, Day3 Phones
  3. Day1 Records, Day2 Phones, Day3 Safety
  4. Day1 Phones, Day2 Records, Day3 Safety Correct answer.

Explanation

Records must occupy day two, which eliminates the first arrangement. Safety cannot be on day one, which eliminates the third and fourth. Only the second arrangement satisfies both rules.

Question 13Reasoning Ability

In a coded filing system, each word is written by reversing its letters and then replacing each vowel with the next vowel (A→E, E→I, I→O, O→U). What is the coded form of NOTE?

  1. ITUN Correct answer.
  2. UTIN
  3. ITNU
  4. UTON

Explanation

Reversing NOTE gives ETON. Replacing the vowels E→I and O→U yields ITUN, so the coded form is ITUN.

Question 14Reasoning Ability

A memo states: 'If a form is incomplete, it is returned to the sender.' A form was not returned to the sender. What can be concluded?

  1. The form was returned late
  2. The form was incomplete
  3. The form was lost
  4. The form was complete Correct answer.

Explanation

The rule makes incompleteness sufficient to trigger a return. Since the form was not returned, it cannot have been incomplete, so it must be complete.

Question 15Reasoning Ability

A sequence of reference codes runs: 2, 5, 11, 23, 47, ... What is the next code number?

  1. 71
  2. 93
  3. 95 Correct answer.
  4. 99

Explanation

Each term equals double the previous term plus one: 2×2+1=5, 5×2+1=11, and so on. Applying the rule to 47 gives 47×2+1=95.

Question 16Reasoning Ability

A clerk finds that all archived invoices are stamped, and no stamped document is stored in the basement. Which conclusion follows?

  1. Some archived invoices are in the basement
  2. Some stamped documents are invoices
  3. No archived invoice is stored in the basement Correct answer.
  4. All basement documents are invoices

Explanation

Archived invoices are stamped, and stamped documents are never in the basement. By chaining the two rules, no archived invoice can be stored in the basement.

Question 17Reasoning Ability

Four assistants-A, B, C, and D-sit in a row facing the same direction. A sits at one end. B sits next to A. C sits next to B. Where does D sit?

  1. At the end opposite A Correct answer.
  2. Next to A on the other side
  3. Between A and B
  4. Between B and C

Explanation

Starting with A at one end, B must sit beside A, and C must sit beside B. The only remaining position is the far end, which D occupies, opposite A.

Question 18Reasoning Ability

A clerk is told: 'Either the report was sent by email or it was hand-delivered.' The report was not hand-delivered. Which conclusion is valid?

  1. The report was sent by email Correct answer.
  2. The report was neither sent nor delivered
  3. The report was both emailed and delivered
  4. The report was lost

Explanation

This is a disjunction with one option eliminated. Since hand-delivery did not occur, the remaining option-sending by email-must be true.

Question 19Reasoning Ability

A sequence of file labels follows the pattern: 4, 9, 16, 25, 36, ... What is the next label number?

  1. 64
  2. 56
  3. 45
  4. 49 Correct answer.

Explanation

The terms are consecutive perfect squares: 2²=4, 3²=9, 4²=16, and so on. The next square after 6²=36 is 7²=49.

Question 20Reasoning Ability

An office has a rule: 'Every memo that is approved is also logged.' A memo is not logged. What follows about that memo?

  1. It was approved but not logged
  2. It was not approved Correct answer.
  3. It was approved
  4. It was logged twice

Explanation

Approval guarantees logging, so a memo that is not logged cannot have been approved. The contrapositive gives the conclusion that the memo was not approved.

Question 21Reasoning Ability

In a row of five desks numbered 1 to 5 from left to right, the manager sits at desk 3. The clerk sits two desks to the left of the manager. Which desk does the clerk occupy?

  1. Desk 2
  2. Desk 1 Correct answer.
  3. Desk 5
  4. Desk 4

Explanation

Two desks to the left of desk 3 is desk 1. Counting leftward from 3 gives 2 and then 1, so the clerk sits at desk 1.

Question 22Reasoning Ability

A clerk must choose two files from four-V, W, X, and Y-for a review. V and W cannot both be chosen. X must be chosen with Y. If V is chosen, which pair is selected?

  1. V and X
  2. X and Y
  3. V and Y Correct answer.
  4. V and W

Explanation

V cannot be paired with W, and X must always accompany Y, so X cannot be paired with V alone. That leaves V and Y as the only valid pair when V is chosen.

Question 23Reasoning Ability

A code operates on three-letter words as follows: the first and third letters swap, and then every letter shifts one step forward in the alphabet. Applying this to the word CAT gives which result?

  1. U B S
  2. D B U
  3. T B D
  4. U B D Correct answer.

Explanation

Swapping the first and third letters of CAT gives TAC. Shifting each letter forward by one yields U, B, D, so the coded word is UBD.

Question 24Reasoning Ability

Six files-F1 to F6-are placed on a shelf. F1 is left of F2. F3 is right of F2. F4 is left of F1. Which file must be leftmost?

  1. F2
  2. F4 Correct answer.
  3. F3
  4. F1

Explanation

The chain runs F4 left of F1, F1 left of F2, and F2 left of F3. F4 sits at the far left of this chain, so it must be the leftmost of the files mentioned.

Question 25Reasoning Ability

A manager reasons: 'If the audit passes, the budget is approved. If the budget is approved, new hires are allowed.' The audit passed. Which conclusion is certain?

  1. New hires are not allowed
  2. The audit will be repeated
  3. New hires are allowed Correct answer.
  4. The budget was rejected

Explanation

Chaining the two conditionals gives: audit passes → budget approved → new hires allowed. Since the audit passed, both consequences follow, including that new hires are allowed.

Question 26Reasoning Ability

In a coding scheme used for office file references, each letter is replaced by the letter that is three places later in the alphabet (wrapping from Z to A). What does the code 'FDH' represent?

  1. CZE
  2. CAE Correct answer.
  3. DAE
  4. CAF

Explanation

To decode, shift each letter three places backward in the alphabet. F becomes C, D becomes A, and H becomes E, giving CAE. Wrapping is not needed here because no letter is among the first three.

Question 27Reasoning Ability

A clerk is organizing a set of numbered folders. The sequence of folder numbers is 3, 6, 12, 24, 48, ... What is the next folder number in the sequence?

  1. 96 Correct answer.
  2. 60
  3. 84
  4. 72

Explanation

Each term is obtained by multiplying the previous term by 2: 3×2=6, 6×2=12, and so on. Therefore the next number after 48 is 48×2=96.

Question 28Reasoning Ability

In an office, all approved leave requests are recorded in the log. Ramesh's leave request is not recorded in the log. What can be concluded?

  1. Ramesh's leave request is pending.
  2. Ramesh's leave request is recorded elsewhere.
  3. Ramesh's leave request is not approved. Correct answer.
  4. Ramesh's leave request is approved.

Explanation

The rule states that if a request is approved, then it is recorded. Since Ramesh's request is not recorded, it cannot have been approved; this is the contrapositive of the given conditional. The other options introduce possibilities not supported by the rule.

Question 29Reasoning Ability

A clerk must file four documents-Invoice, Receipt, Memo, and Letter-in four separate folders labeled 1 to 4 from top to bottom. The Invoice must be above the Receipt. The Memo must be below the Receipt. The Letter must be in folder 1. Which document must be in folder 2?

  1. Memo
  2. Letter
  3. Receipt
  4. Invoice Correct answer.

Explanation

Letter is in folder 1. Since Invoice is above Receipt and Memo is below Receipt, the order must be Invoice, Receipt, Memo in folders 2, 3, and 4 respectively. Therefore folder 2 must contain the Invoice.

Question 30Reasoning Ability

A sequence of reference codes follows the pattern: 5, 10, 9, 18, 17, 34, ... What is the next code number?

  1. 35
  2. 32
  3. 33 Correct answer.
  4. 68

Explanation

The pattern alternates between multiplying by 2 and subtracting 1: 5×2=10, 10−1=9, 9×2=18, 18−1=17, 17×2=34. Therefore the next operation is subtracting 1, giving 34−1=33.

Question 31Reasoning Ability

In a coded filing system, each word is encoded by shifting every letter two places forward in the alphabet (wrapping from Z to A). What is the code for the word 'FILE'?

  1. H K N H
  2. H K O G
  3. H K N G Correct answer.
  4. G K N G

Explanation

Shift each letter of FILE two places forward: F→H, I→K, L→N, E→G. The encoded word is HKNG. No wrapping is needed because none of the letters are near the end of the alphabet.

Question 32Reasoning Ability

A clerk is arranging five training sessions-A, B, C, D, and E-on five consecutive days. Session C must be on the third day. Session A must be before C. Session B must be immediately after C. Session D must be before A. Which session is on the first day?

  1. A
  2. B
  3. D Correct answer.
  4. C

Explanation

C is on day 3, so B is on day 4. A must be before day 3, and D must be before A, so D must be on day 1 and A on day 2. Therefore the first day is D.

Question 33Reasoning Ability

A manager reasons: 'If the audit is passed, then the budget is approved. If the budget is approved, then new hires are allowed.' The audit was passed. What conclusion follows logically?

  1. The budget is not approved.
  2. The audit was not passed.
  3. New hires are not allowed.
  4. New hires are allowed. Correct answer.

Explanation

From 'audit passed' we infer 'budget approved' by the first conditional. Then from 'budget approved' we infer 'new hires allowed' by the second conditional. Thus new hires are allowed.

Question 34Reasoning Ability

In a row of six desks numbered 1 to 6 from left to right, the supervisor sits at desk 4. The clerk sits three desks to the left of the supervisor. The intern sits immediately to the right of the clerk. At which desk does the intern sit?

  1. 1
  2. 2 Correct answer.
  3. 4
  4. 3

Explanation

The supervisor is at desk 4. The clerk is three desks to the left, so desk 1. The intern is immediately to the right of the clerk, so desk 2.

Question 35Reasoning Ability

A clerk must choose two files from five-P, Q, R, S, and T-for a review. P and Q cannot both be chosen. R must be chosen together with S. If P is chosen, which pair of files must be chosen?

  1. P and S Correct answer.
  2. P and T
  3. P and Q
  4. P and R

Explanation

If P is chosen, Q cannot be chosen. Since R must be chosen with S, the only way to have two files including P is to choose P and S (which brings R as well, but the question asks for a pair that must be chosen; P and S is the only pair that can be chosen without violating the rule).

Question 36Reasoning Ability

A code operates on three-letter words as follows: first, the first and third letters are swapped; then every letter is shifted one step forward in the alphabet (wrapping from Z to A). What is the code for the word 'BAG'?

  1. H B C Correct answer.
  2. H A B
  3. G B C
  4. G A B

Explanation

Swap first and third letters of BAG to get GAB. Then shift each letter one step forward: G→H, A→B, B→C, giving HBC.

Question 37Reasoning Ability

In a set of office documents, all confidential documents are stamped. Some stamped documents are also scanned. Which statement must be true?

  1. All stamped documents are confidential.
  2. Some confidential documents are stamped. Correct answer.
  3. Some confidential documents are scanned.
  4. All scanned documents are confidential.

Explanation

Since all confidential documents are stamped, it follows that some (in fact all) confidential documents are stamped. The other statements are not necessarily true: we cannot infer that any confidential document is scanned, nor that all stamped documents are confidential.

Question 38Reasoning Ability

A sequence of file numbers is: 7, 14, 28, 56, ... What is the next number?

  1. 112 Correct answer.
  2. 84
  3. 70
  4. 98

Explanation

Each term is double the previous term: 7×2=14, 14×2=28, 28×2=56. Therefore the next term is 56×2=112.

Question 39Reasoning Ability

A clerk is organizing four meetings-W, X, Y, and Z-in four time slots: 9 AM, 10 AM, 11 AM, and 12 PM. Meeting W must be before meeting X. Meeting Y must be after meeting X. Meeting Z must be before meeting W. Which meeting is in the 10 AM slot?

  1. X
  2. W Correct answer.
  3. Z
  4. Y

Explanation

The order must be Z, W, X, Y to satisfy Z before W, W before X, and Y after X. Therefore the 10 AM slot (second slot) is W.

Question 40Reasoning Ability

A clerk is told: 'If the report is approved, then it is sent to the director.' The report was not sent to the director. What can be concluded?

  1. The report was sent to the manager.
  2. The report was approved.
  3. The report was not approved. Correct answer.
  4. The report was not sent to anyone.

Explanation

The conditional states that approval implies sending to the director. Since the report was not sent to the director, it cannot have been approved; this is the contrapositive. The other options are not supported by the given information.

Question 41Reasoning Ability

A clerk must schedule five appointments-P, Q, R, S, and T-on five consecutive days. Appointment Q must be on the third day. Appointment P must be before Q. Appointment R must be immediately after Q. Appointment S must be before P. Which appointment is on the first day?

  1. Q
  2. R
  3. S Correct answer.
  4. P

Explanation

Q is on day 3, so R is on day 4. P must be before Q, and S must be before P, so S must be on day 1 and P on day 2. Therefore the first day is S.

Question 42Reasoning Ability

A manager says: 'If the team meets the deadline, then the project is successful. If the project is successful, then the client is satisfied.' The client is not satisfied. What can be concluded?

  1. The project is successful.
  2. The team did not meet the deadline. Correct answer.
  3. The client is satisfied.
  4. The team met the deadline.

Explanation

From 'client not satisfied' we infer 'project not successful' by the contrapositive of the second conditional. Then from 'project not successful' we infer 'team did not meet the deadline' by the contrapositive of the first conditional.

Question 43Reasoning Ability

In a row of seven desks numbered 1 to 7 from left to right, the manager sits at desk 4. The assistant sits two desks to the right of the manager. The clerk sits three desks to the left of the assistant. At which desk does the clerk sit?

  1. 4
  2. 1
  3. 2
  4. 3 Correct answer.

Explanation

Manager is at desk 4. Assistant is two desks to the right, so desk 6. Clerk is three desks to the left of the assistant, so desk 3.

Question 44Reasoning Ability

A clerk must choose three files from six-A, B, C, D, E, and F-for an audit. A and B cannot both be chosen. C must be chosen together with D. If E is chosen, then F must be chosen. Which set of three files is valid?

  1. A, E, F
  2. C, D, E
  3. A, C, D Correct answer.
  4. A, B, C

Explanation

Check each option: A, C, D includes C with D and does not include both A and B, so it is valid. The others violate at least one rule.

Question 45Reasoning Ability

A sequence of reference codes is: 2, 3, 5, 9, 17, ... What is the next code number?

  1. 34
  2. 33 Correct answer.
  3. 31
  4. 25

Explanation

The pattern is to double the previous term and subtract 1: 2×2−1=3, 3×2−1=5, 5×2−1=9, 9×2−1=17. Therefore the next term is 17×2−1=33.

Question 46Reasoning Ability

In a coded filing system, each word is encoded by shifting every letter one place backward in the alphabet (wrapping from A to Z). What is the code for the word 'MEMO'?

  1. MDNN
  2. LDNN
  3. LD LN
  4. LDLN Correct answer.

Explanation

Shift each letter of MEMO one place backward: M→L, E→D, M→L, O→N. The encoded word is LDLN.

Question 47Reasoning Ability

A clerk is arranging four meetings-W, X, Y, and Z-in four rooms: 101, 102, 103, and 104. Meeting W must be in a room with an odd number. Meeting X must be in a room with an even number. Meeting Y must be in room 103. Meeting Z must be in a room with a number greater than 102. Which meeting is in room 101?

  1. W Correct answer.
  2. X
  3. Y
  4. Z

Explanation

Y is in 103. Z must be in a room greater than 102, so Z could be in 103 or 104, but 103 is taken, so Z is in 104. Then W must be in an odd-numbered room, and the remaining odd rooms are 101 and 103, but 103 is taken, so W is in 101. X is in 102.

Question 48Reasoning Ability

A manager states: 'If the budget is approved, then the project will proceed. If the project proceeds, then new staff will be hired.' The budget was not approved. What can be concluded?

  1. No conclusion can be drawn about the project or new staff. Correct answer.
  2. The project will not proceed.
  3. The project will proceed.
  4. New staff will be hired.

Explanation

The conditionals only specify what happens if the budget is approved. Since the budget was not approved, the antecedents are false, and we cannot infer anything about the project or new staff. This is the fallacy of denying the antecedent.

Question 49Reasoning Ability

In a row of eight desks numbered 1 to 8 from left to right, the director sits at desk 5. The deputy sits three desks to the left of the director. The secretary sits two desks to the right of the deputy. At which desk does the secretary sit?

  1. 3
  2. 4 Correct answer.
  3. 5
  4. 2

Explanation

Director is at desk 5. Deputy is three desks to the left, so desk 2. Secretary is two desks to the right of the deputy, so desk 4.

Question 50Reasoning Ability

A clerk files four folders-Alpha, Bravo, Charlie, and Delta-in four cabinet slots numbered 1 to 4 from top to bottom. Alpha must be filed above Charlie. Delta must be filed in slot 4. Bravo must be filed immediately above Delta. Which of the following gives a filing order that satisfies all the conditions?

  1. Bravo, Delta, Alpha, Charlie
  2. Alpha, Bravo, Delta, Charlie
  3. Alpha, Charlie, Bravo, Delta Correct answer.
  4. Charlie, Alpha, Bravo, Delta

Explanation

Bravo must sit immediately above Delta, and Delta is fixed in slot 4, so Bravo must occupy slot 3. That leaves Alpha and Charlie for slots 1 and 2, and Alpha must come above Charlie, so Alpha goes in slot 1 and Charlie in slot 2. The only valid arrangement is therefore Alpha, Charlie, Bravo, Delta.