IBPS RRB Clerk flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Syllogism valid conclusion

From 'All A are B' and 'All B are C', the valid conclusion is 'All A are C'. From 'Some A are B' and 'All B are C', 'Some A are C' is valid.

Blood relation notation

Use + for male and − for female. A vertical line means parent-child; a horizontal double line means siblings. This helps avoid gender confusion in puzzles.

Order and ranking formula

If a person is nth from the left and mth from the right in a row, total number of persons = n + m − 1. Use this to find missing positions quickly.

Direction sense grid

Place North as +y and East as +x. After a series of turns, final distance from start is √(x² + y²) when the net displacement forms a right angle.

Inequality chain rule

Only combine inequalities with the same direction: A > B ≥ C gives A > C. Do not combine A > B < C to conclude anything about A and C.

Circular seating facing centre

For n persons facing the centre, the immediate left of a person is the (n−1)th position clockwise. Facing outward reverses left and right.

Coding-decoding letter shift

Check the alphabetical position difference between corresponding letters. A common pattern is a constant shift, reversal, or opposite letter (A↔Z, B↔Y).

Series completion checks

Test differences, ratios, squares, cubes, and alternating patterns. For letter series, convert letters to numbers (A=1, Z=26) to spot the rule.

Successive percentage change

A change of a% followed by b% gives net change = a + b + ab/100. A 10% increase then 10% decrease results in a 1% net decrease.

Simple and compound interest

SI = P × R × T / 100. CI = P[(1 + R/100)^T − 1]. For the same P, R, T, CI is greater than SI when T > 1 year.

Profit and loss basics

Profit% = (SP − CP)/CP × 100. Loss% = (CP − SP)/CP × 100. If two items are sold at the same price with equal profit% and loss%, there is always an overall loss.

Time and work together

If A finishes in x days and B in y days, together they take xy/(x + y) days. Using LCM of x and y as total work units simplifies calculations.

Train crossing platform

Time to cross a platform = (length of train + length of platform) / speed of train. Convert km/h to m/s by multiplying by 5/18.

Average change rule

Average = sum of values / number of values. If every value is increased by k, the average increases by k; if every value is multiplied by k, the average is multiplied by k.

Ratio division formula

To divide amount A in ratio p : q, the shares are Ap/(p+q) and Aq/(p+q). For three parts p : q : r, use the sum p+q+r as denominator.

Mensuration key formulas

Area of circle = πr²; circumference = 2πr; volume of cylinder = πr²h; volume of sphere = (4/3)πr³; area of triangle = ½ × base × height.

Subject-verb agreement

A singular subject takes a singular verb. 'One of + plural noun' takes a singular verb: 'One of the boys is present.' Neither/either takes a singular verb.

Since versus for

'Since' is used with a point of time (since 2010, since Monday). 'For' is used with a duration (for two years, for three hours).

Present perfect tense use

Use has/have + past participle for a past action with present relevance. Use had + past participle for the earlier of two past actions.

Between versus among

'Between' is used for two persons or things. 'Among' is used for more than two. Example: divided between the two brothers; distributed among the five students.

Common error spotting

Check for double negatives, wrong comparatives (more better), missing articles, and non-parallel list items. These are frequent in IBPS error-spotting questions.

Cloze test strategy

Read the entire passage first to grasp context. Choose the option that fits both meaning and grammar; eliminate options that break collocations or tense consistency.

Para jumble opening sentence

The opening sentence is usually independent and introduces the topic. Link subsequent sentences using pronouns (it, they) and connectors (however, therefore, moreover).

Hindi sandhi types

संधि के तीन प्रकार: स्वर संधि, व्यंजन संधि और विसर्ग संधि। स्वर संधि में दो स्वर मिलते हैं, जैसे विद्या + आलय = विद्यालय।

RBI establishment facts

The Reserve Bank of India was established on 1 April 1935 and nationalised in 1949. It issues currency notes except one-rupee notes and coins, which are issued by the Government of India.

Repo and reverse repo

Repo rate is the rate at which RBI lends short-term funds to banks. Reverse repo is the rate at which RBI borrows from banks. Both are monetary policy tools.

CRR and SLR

CRR is the percentage of deposits banks must keep with RBI. SLR is the percentage of deposits banks must keep in liquid assets like government securities.

RTGS versus NEFT

RTGS is for high-value transactions with a minimum of ₹2 lakh and is settled in real time. NEFT settles in batches and has no minimum limit.

Computer shortcut keys

Ctrl+C copy, Ctrl+V paste, Ctrl+X cut, Ctrl+Z undo, Ctrl+Y redo, Ctrl+S save, Ctrl+P print, Ctrl+F find. These are frequently asked in computer knowledge sections.

Computer generations

First generation used vacuum tubes; second used transistors; third used integrated circuits; fourth used microprocessors; fifth is based on artificial intelligence.

Networking protocols

HTTP/HTTPS for web browsing, FTP for file transfer, SMTP for sending email, and IP address for identifying devices on a network.

Indian financial regulators

SEBI regulates the securities market, IRDAI regulates insurance, PFRDA regulates pensions, and NABARD supports agriculture and rural development.