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IBPS Clerk Quantitative Aptitude (Numerical Ability) Flashcards
50 question-and-answer cards covering Quantitative Aptitude (Numerical Ability) as it is examined in IBPS Clerk. 24 of them are printed below, taken from across the deck — no signup, no paywall on the preview.
24 sample cards from the Quantitative Aptitude (Numerical Ability) deck
Sampled from the end of the deck, so these are different cards from the ones shown on the syllabus page.
In a proportion a : b :: c : d, what is the key relationship?
Product of extremes = product of means, i.e. a × d = b × c.
In the proportion a : b :: c : d, name the extremes, means, and the fourth proportional.
a and d are the extremes, b and c are the means, and d is the fourth proportional to a, b, c.
What is the mean proportional (geometric mean) between a and b?
The mean proportional is √(a × b).
If a sum is divided in the ratio a : b : c, what fraction does the first share represent?
The first share = a / (a + b + c) of the total sum.
What is the formula for the average (arithmetic mean) of a set of numbers?
Average = (Sum of all observations) / (Number of observations).
What is the average of the first n natural numbers?
Average = (n + 1) / 2.
What is the average of the first n consecutive odd numbers, and of the first n even numbers?
Average of first n odd numbers = n. Average of first n even numbers = (n + 1).
How does the average change if every number in a set is increased by k?
The new average also increases by k (the same constant).
What is the formula for finding present age problems where a person is x times as old as another?
Set up an equation: if A is x times B's age, A = x·B; combine with the given age difference or future/past condition to solve.
In alligation/mixtures, what does the rule of alligation give you?
It gives the ratio in which two ingredients at different prices/concentrations must be mixed: (Quantity cheaper)/(Quantity dearer) = (Price dearer − Mean) / (Mean − Price cheaper).
If a vessel has milk and from it some is replaced by water n times, what fraction of milk remains?
Remaining milk = Initial quantity × (1 − replaced/total)^n.
Define Cost Price (CP) and Selling Price (SP).
Cost Price is the price at which an article is bought; Selling Price is the price at which it is sold.
What are the formulas for Profit% and Loss%?
Profit% = (Profit / CP) × 100; Loss% = (Loss / CP) × 100. Both are always calculated on the Cost Price.
What is the formula for SP in terms of CP and gain/loss percent?
SP = CP × (100 + Gain%)/100, or SP = CP × (100 − Loss%)/100.
What is discount, and on what value is it calculated?
Discount is a reduction given on the Marked Price (MP). Discount = MP − SP, and Discount% = (Discount / MP) × 100.
If two successive discounts of a% and b% are given, what is the single equivalent discount?
Single equivalent discount = (a + b − ab/100) %.
What is the formula for Simple Interest?
SI = (P × R × T) / 100, where P = principal, R = rate per annum, T = time in years.
In simple interest, what is the formula for the total amount A?
A = P + SI = P(1 + RT/100).
At simple interest, in how many years will a sum double at rate R% per annum?
Time to double = 100 / R years (since SI must equal P).
What is the formula for the Amount under Compound Interest (compounded annually)?
A = P(1 + R/100)^T, and CI = A − P.
How is the compound interest amount formula adjusted when interest is compounded half-yearly?
Rate is halved and time is doubled: A = P(1 + (R/2)/100)^(2T).
For the same P, R, and 2 years, what is the difference between CI and SI?
Difference = P × (R/100)², equivalently CI − SI = P·R²/100² for 2 years.
If A can do a work in n days, how much work does A do in one day?
A's one-day work = 1/n of the total work.
If A does a job in x days and B in y days, how long do they take working together?
Together they take (xy)/(x + y) days, since combined one-day work = 1/x + 1/y.
What this deck covers
This deck covers the Quantitative Aptitude (Numerical Ability) portion of the IBPS Clerk syllabus in question-and-answer form. Browse the full IBPS Clerk syllabus to see how it fits with the rest.
Answers are written to be recallable, not just readable — averaging about 71 characters, which is long enough to carry the reasoning and short enough to say out loud.
A deck like this earns its keep on the second and third pass. Read the syllabus first so you know the shape of the subject, then use the cards to find the specific facts that have not stuck.
Quantitative Aptitude (Numerical Ability) flashcards FAQ
How many Quantitative Aptitude (Numerical Ability) flashcards are in this IBPS Clerk deck?
50 cards. This page previews 24 of them, sampled evenly across the deck so you can judge the difficulty before installing anything.
Are these IBPS Clerk flashcards free?
Yes. The preview here is free to read with no signup, and the full 50-card deck is free inside the Examius app.
What do the Quantitative Aptitude (Numerical Ability) cards cover?
They follow the Quantitative Aptitude (Numerical Ability) portion of the IBPS Clerk syllabus, in question-and-answer form.
How should I use these flashcards?
Read the syllabus first so you know the shape of the subject, then drill the deck. Examius schedules each card with spaced repetition, so cards you keep missing come back sooner and ones you know drift further apart.