List of top Quantitative Aptitude Questions

There are 20 students in a class. If one of the students of 18 years is replaced by another student, the average age of the class is reduced by 2 months. What is the age of the new student?

If \(\log(10x)=3\), what is the value of \(x\)?

From a bank, Ram and Shyam together took loans under simple interest and lent the total to Mohan at \(2%\) higher} simple interest. After \(4\) years, Ram’s total money earned (after paying the bank interest) was \(\rupee 400\) more than Shyam’s. By how much was the amount borrowed by Ram more than that borrowed by Shyam?

In a group of \(5\) students, how many ways can the positions of president}, vice-president}, and treasurer} be filled?

What is the probability that in three throws of a dice, one gets exactly two 6s?

Rubina could get equal number of Rs. 55, Rs. 85 and Rs.105 tickets for a movie. She spends Rs. 2940 for all the tickets. How many of each did she buy?

In a collection of coins, the ratio of the number of 2-rupee coins to 5-rupee coins to 1-rupee coins is \(3 : 4 : 5\). If the total value of these coins is Rs. 18.75, how much money is represented by the 5-rupee coins?

A 160 m long train crosses a 160 m long platform in 16 seconds. Then the speed of the train is:

Two pipes, A and B, can fill a tank in 20 and 30 minutes respectively. If both the pipes are used together, how long will it take to fill the tank?

Six years ago, the ratio of the ages of Ram and Ravi was 6 : 5. Four years hence, the ratio of their ages will be 11:10. What is Ravi's age at present?

If \( \sqrt{x} + 14 = \sqrt{2601} \), then \( x \) is equal to:

The average of the first 100 positive integers is:

The average of 7 consecutive numbers is 20. The largest of these numbers is:

If \[ \sqrt{218 + \sqrt{37 + \sqrt{144}}} = K, \text{ then value of } K \text{ is} \]

The ages of two persons differ by 16 years. If 6 years ago, the elder one was three times as old as the younger one, then the present age of the elder one is:

The fraction equivalent to \( \frac{2}{7}% \) is

Which of the following is a pair of co-primes?

In how many years will a sum of money double itself at 6.1% simple interest per annum?

The simple interest on a sum of money is \( \frac{4}{9} \) of the principal. If the rate percent and time are numerically equal, then find the rate percent.