MAH MBA CET flashcards

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

Circular Arrangement Facing Centre

When all people face the centre, the left of any person points clockwise and the right anticlockwise; reverse both directions when they face outward.

Rank From Both Ends

Total number of persons in a row equals the rank from the top plus the rank from the bottom minus one, because the counted person appears in both ranks.

Some A Are B

The particular affirmative 'Some A are B' converts validly to 'Some B are A', and it also asserts that at least one object belongs to both classes.

Universal Affirmative Conversion

'All A are B' converts only to 'Some B are A'; it never converts to 'All B are A' unless the two classes are known to be identical.

EJOTY Letter Anchors

The letters E, J, O, T and Y occupy positions 5, 10, 15, 20 and 25, giving quick anchors for locating any other letter's alphabet position.

Clock Hand Angle Formula

At h hours and m minutes the angle between the hands is |30h − 5.5m| degrees; the minute hand gains 5.5 degrees on the hour hand each minute.

Coding Shift Pattern

If every coded letter sits a fixed number of places from the original, the code is a constant shift; alternating shifts indicate two interleaved letter series.

Morning and Evening Shadows

The sun rises in the east, so morning shadows point west, and it sets in the west, so evening shadows point east; shadows shorten as the sun climbs.

Mirror Image Reversal

A mirror image swaps left and right while leaving top and bottom unchanged; a water image instead swaps top and bottom and leaves left and right unchanged.

Squares in an n×n Grid

An n by n grid contains 1² + 2² + … + n² squares in total, which simplifies to the formula n(n+1)(2n+1)/6.

Rectangles in an m×n Grid

An m by n grid of unit cells contains m(m+1)n(n+1)/4 rectangles of all sizes, found by choosing two of m+1 vertical and n+1 horizontal lines.

Paper Fold Hole Count

A single punch through a sheet folded n times passes through 2ⁿ layers, producing up to 2ⁿ holes arranged symmetrically about each fold line.

Rotation Versus Reflection Test

Rotate or reflect a figure and compare three marked points: rotation keeps their clockwise order, while reflection reverses it.

Series Rotation Steps

In figure series, a marked element often turns a fixed amount each step, commonly 45, 90, 135 or 180 degrees, sometimes alternating direction.

Odd One Out by Symmetry

Compare the number of lines of symmetry and the number of enclosed regions; the figure whose counts differ from the rest is the odd one out.

Embedded Figure Identification

To find a hidden shape, first locate its most distinctive angle or corner, then check that all remaining sides lie on drawn lines of the complex figure.

Successive Percentage Change

Two successive changes of a percent and b percent produce a net change of a + b + ab/100 percent; with discounts the product term becomes negative.

CI Minus SI for Two Years

For two years at rate r, compound interest exceeds simple interest by P(r/100)², where P is the principal and r the annual rate.

Alligation Ratio Rule

Mixing ingredients priced p and q to obtain a mean price m requires quantities in the ratio (q − m) : (m − p), with m lying between p and q.

Time and Work Combined

If A alone takes a days and B alone takes b days, working together they finish in ab/(a+b) days, because their rates 1/a and 1/b add.

Average Speed Equal Distances

When two equal distances are covered at speeds x and y, the average speed for the whole trip is 2xy/(x+y), the harmonic mean, not the arithmetic mean.

Upstream and Downstream

Downstream speed equals boat speed plus current speed; upstream equals boat speed minus current speed; boat speed is half their sum and current half their difference.

HCF and LCM Product

For any two positive integers the product of their HCF and LCM equals the product of the numbers themselves, so a missing value follows from the other three.

Either-Or Probability

For two events, P(A or B) equals P(A) + P(B) − P(A and B); when the events cannot happen together the last term is zero.

Para Jumble Opening Sentence

The first sentence of a paragraph normally introduces a new noun with no pronoun and no connector such as however, therefore or this, which need an earlier reference.

Reading Comprehension Inference

A stated fact is written in the passage; an inference is one logical step beyond it; an option needing outside knowledge is not supported by the text.

Contrast Connector Signal

Words such as but, although, nevertheless and whereas announce an opposite idea, so the following clause or blank must reverse the earlier meaning.

Subject-Verb Agreement

The verb agrees with the head noun of the subject, not with a noun inside a prepositional phrase, as in 'the box of pens is heavy'.

Parallel Structure Rule

Items joined by and, or, not only … but also must have the same grammatical form, so a noun pairs with a noun and an infinitive with an infinitive.

Idiom: Bite the Bullet

To bite the bullet means to accept and endure a painful or unpleasant situation with courage rather than to hesitate or complain about it.

Comparative versus Superlative

The comparative form compares exactly two things, the superlative compares three or more, and a word never takes both more and the -er ending.

Antonym Question Elimination

In a single-answer antonym question two options that mean the same as each other cannot both be right, so such pairs stand or fall together.