UIIC Assistant cheat sheet

Syllogism conversions: All A are B → Some B are A; No A is B ↔ No B is A; Some A are B ↔ Some B are A. 'Some A are not B' has no valid simple conversion.

Circular seating: facing the centre, a person's right-hand neighbour is anticlockwise and left is clockwise; facing outward, the directions reverse.

Linear seating: if a row faces north, a person's right is east; if facing south, right is west. In mixed rows, reverse left/right for the south-facing group.

Blood relations: 'only son' means the sole male child; 'only child' means no siblings. Label gender and maternal/paternal sides before concluding.

Direction sense: use Pythagoras for perpendicular moves; net displacement = √(x²+y²). Opposite moves along one line cancel by subtraction.

Coding-decoding: forward letter values are A=1 to Z=26; reverse values are A=26 to Z=1 = 27 − forward value. Check +1, −1, alternating and reverse-alphabet patterns.

Inequality: an either-or conclusion requires the same subject-predicate pair with complementary signs (≤ with >, or ≥ with <) and neither conclusion true alone.

Number and letter series: test differences, second differences, squares, cubes, primes and alternating operations. For alphanumeric series, classify each character before counting.

Data sufficiency: decide whether each statement alone or both together are necessary; do not assume information beyond the question.

Percentage: an increase by a% then b% gives net a + b + ab/100 percent; decreases use negative signs.

SI = PRT/100; CI = P[(1+r/100)^n − 1]; half-yearly compounding uses r/2 and 2n, quarterly uses r/4 and 4n.

Profit% = (SP−CP)/CP×100; Loss% = (CP−SP)/CP×100; SP = CP(100±p)/100. Discount is always calculated on marked price.

Ratio and partnership: profit shares are proportional to capital × time. A ratio a:b corresponds to actual values ax and bx.

Average = sum/n; weighted average = Σwx/Σw. If every value rises by k, the average rises by k.

Speed = distance/time; km/h → m/s multiply by 5/18. Train crossing a platform: time = (train length + platform length)/relative speed.

Boats: downstream = b+s, upstream = b−s; b = (d+u)/2 and s = (d−u)/2.

Alligation: quantity ratio = (mean − cheaper)/(dearer − mean). It applies to mixtures and to two-group averages.

Permutation nPr = n!/(n−r)!; combination nCr = n!/[r!(n−r)!]; probability = favourable outcomes/total outcomes.

Pipes and cisterns: filling rates add when pipes work together; subtract for an outlet or leak. Time = 1/(net rate).

Subject-verb agreement: a singular subject takes a singular verb; intervening phrases do not change number. 'Each', 'every', 'either' and 'neither' are singular.

Past perfect (had + past participle) marks the earlier of two past actions; simple past marks the later action.

Articles: 'a' before consonant sounds and 'an' before vowel sounds, based on pronunciation: an hour, a university, an MBA.

Prepositions: since + point of time, for + duration; between for two, among for more than two; on for dates/days, in for months/years.

Active to passive: object becomes subject; verb becomes be + past participle; retain tense and add 'by' only when the agent matters.

Para jumbles: the opening sentence usually introduces a new noun without pronouns or linking words; pronouns (he, it, this) and connectors (however, therefore) mark later sentences.

Cloze test: check grammar first (tense, preposition, article), then meaning and collocation; the correct word must fit both.

Error spotting: check subject-verb agreement, tense consistency, pronoun reference, preposition and article use in that order.

Reading comprehension: answers must be supported by the passage; an inference is implied but not directly stated, while an assumption is unstated.

RBI was established in 1935 and nationalised in 1949; headquarters Mumbai. It manages monetary policy, currency and foreign exchange.

Repo rate is RBI's lending rate to banks against government securities; reverse repo absorbs liquidity. CRR is cash held with RBI; SLR is held in approved securities.

IRDAI was set up in 1999 under the IRDA Act, 1999, headquartered in Hyderabad. It regulates life, general and health insurance.

Life insurance was nationalised in 1956 forming LIC; general insurance was nationalised in 1972 forming GIC. The Insurance Act dates to 1938.

DICGC insures deposits up to ₹5 lakh per depositor per bank, covering principal and interest. It is a wholly owned RBI subsidiary.

PMJJBY: ₹2 lakh life cover, ages 18–50, premium ₹436 per year. PMSBY: ₹2 lakh accident cover, ages 18–70, premium ₹20 per year.

Insurance penetration = premium as a percentage of GDP; insurance density = premium per capita. India's life insurance penetration exceeds general insurance penetration.

SEBI was formed in 1988 and got statutory powers in 1992; it regulates securities markets. NABARD (1982) handles rural credit; NPCI (2008) runs UPI and RuPay.

FDI in Indian insurance is 74% (2021). Microinsurance, reinsurance and health insurance are regulated under IRDAI guidelines.

NPA is a loan overdue for more than 90 days; CASA means current and savings account deposits, a low-cost bank liability.

First generation used vacuum tubes, second transistors, third integrated circuits, fourth microprocessors, fifth artificial intelligence and parallel processing.

RAM is volatile working memory; ROM is non-volatile firmware storage. Cache is faster than RAM; registers are fastest.

IPv4 is 32-bit written in four decimal octets; IPv6 is 128-bit in hexadecimal. HTTP uses port 80; HTTPS uses port 443.

Shortcuts: Ctrl+C copy, Ctrl+X cut, Ctrl+V paste, Ctrl+Z undo, Ctrl+Y redo, Ctrl+S save, Ctrl+P print, Ctrl+F find.

OS functions: process management, memory management, file system, device management and user interface. Windows, Linux and macOS are operating systems.

1 byte = 8 bits; 1 KB = 1024 bytes; 1 MB = 1024 KB; 1 GB = 1024 MB. Binary uses base 2; hexadecimal uses base 16.

A URL contains protocol, domain and path. DNS translates domain names into IP addresses.

Malware types include virus, worm, Trojan and ransomware. A firewall filters network traffic; encryption protects data confidentiality.

MS Excel: $ fixes a cell reference; SUM, AVERAGE and COUNT are functions. A formula starts with =.