List of top Quantitative Aptitude Questions

While finding the average marks of the class, marks of one student were wrongly entered as 93 instead of 63 resulting to an increase in the average by 0.5 mark. The number of students in the class is.

A merchant had 1000kg of grain, a part of which he sold at 10% profit and the rest at 18% profit. He gains 16% on the whole. The quantity sold at 18% profit is

The surface area (in cm²) of a cuboid with dimensions 3cm, 4cm and 5cm is

If 2 sin 2θ = 1, then the value of tan2θ+ cos2θ is

What sum of money will become Rs 520 in 5 years and to Rs 568 in 7 years with the same rate of simple interest?

A and B can do work in 12 days and 24 days respectively. They started working together but left the work 3 days before its completion and thereafter B alone completed the work. For how many days A worked with B?

Choose the correct alternative that will replace the question mark in the given series: \(\frac{16}{3}\), 8, 12, 18, 27, ?

A man covers a distance of 12km by walking at a speed of 4km/h. How much distance (in km) would he cover in the same time, if he walks at a speed of 6 km/h ?

The value of \(\frac{1}{x+1}+\frac{2x}{1-x^2}+\frac{x}{x-1}\) is :

The compound interest on ₹10,000 in 6 months at 8% per annum, the interest being compounded quarterly, is :

Read the statements about set and their properties.
A. S = {1, 2, 3, 4, 5} is a set of order 5.
B. S = {0} is a set of order zero.
C. If a~b and b~c; then a~c It is a transitive property.
D. If a~b, and b~a It is a symmetric property.
E. For all a, a~b It is a reflexive property.
Choose the correct answer from the options given below :

Match List-I and List-II

LIST I (Operation of union)		LIST II (Law)
A.	A∪B=B∪A	I.	Associative Law
B.	(A∪B)∪C=A∪(B∪C)	II.	Commutative Law
C.	A∪A=A	III.	Law of Idempotent
D.	A∪Φ=A	IV.	Law of Identity

Choose the correct answer from the options given below:

If three numbers are in the ratio 1: 2: 5 and sum of their square is 120 Find the number.

Find in how many years will a sum double itself when given on 5% simple interest.

The vice-chancellor of ABC University decided to form a committee to look into the feasibility of introduction of semester systems at the undergraduate level. Five members from the Executive Council and 7 members from the Academic Council were found to be suitable for the job. In how many ways can the vice-chancellor form the committee of 6 members such that at least 4 members of the committee belong to the Academic Council?

How many 4-digit numbers of the form AB61 are there that are divisible by 11 (where A and B are distinct digits)?

The integers \(1, 2 ... 40\) are written on the blackboard. The following operation is then repeated 39 times. In each repetition, any two numbers, say a and b, currently on the blackboard are erased and a new number \(a+b-1\) is written. What will be the number left on the board at the end?

Given the quadratic equation \(x^2 – (A – 3)x – (A – 7) = 0\), for what value of A is the sum of squares of the roots 0?

Sumeet spends 10% of his salary on his child’s education, 20% of the remainder on rent and 25% of the balance on garments. Finally, he is left with $ 5,400. What is his salary?

A question is followed by two statements, numbered (1) and (2). Using the information provided and general knowledge, decide whether the information given is sufficient to solve the problem.
Is \(x^2-y^2\) even?
(1) \(x+y\) is even.
(2) \(x-y\) is odd.

Pinky is standing in a queue at a ticket counter. Suppose the ratio of the number of persons standing ahead of Pinky to the number of persons standing behind her in the queue is 3:5. If the total number of persons in the queue is less than 300, then the maximum possible number of persons standing ahead of Pinky is

Let r be a real number and \(f(x) = \begin{cases}     2x - r & \text{if } x \geq r \\     r & \text{if } x < r \end{cases}\).Then, the equation \(f(x)=f(f(x))\) holds for all real values of x where

Let \(f(x)\) be a quadratic polynomial in x such that \(f(x)≥0\) for all real numbers x.If \(f(2)=0\) and \(f(4)=6\),then \(f(−2)\) is equal to

Two ships meet mid-ocean,and then,one ship goes south and the other ship goes west,both travelling at constant speeds.Two hours later,they are 60 km apart.If the speed of one of the ships is 6km per hour more than the other one,then the speed,in km per hour,of the slower ship is