List of top Quantitative Aptitude Questions on Number Systems

If Rs. 4,800 will maintain a family of 5 persons for 72 days, for how long will Rs. 6,400 maintain a family of 8 persons?

Four prime numbers are written in ascending order. The product of the first three numbers is 385, and that of the fourth number is what?

The least perfect square, which is divisible by each of 21, 36 and 66 is:

84,232 + 414 - 8,439 = ?

What greatest number can be subtracted from 10000, so that the remainder may be divisible by 32, 36, 48

How many numbers between 200 and 500 are divisible by 13.

Which of the following number is exactly divisible by 15?

If the population of a town is p in the beginning of any year then it becomes 3+2p in the beginning of the next year. If the population in the beginning of 2019 is 1000, then the population in the beginning of 2034 will be

How many pairs (m, n) of positive integers satisfy the equation \(m^2+105=n^2 \) ?

If m and n are integers such that \((\sqrt{2})^{19} 3^{4} 4^{2} 9^{m} 8^{n}= 3^{n} 16^{m} (^4\sqrt{64})\) then m is

Rahul asked Shyam to find the smallest integer $N$ such that $N!>10^N$. Shyam says $N$ is between 10–15; Sohan says 16–20; Suresh says 21–25; Sonal says 26–31. Who is correct?

Find the number of zeros at the end of $(5!)^{5!}+(10!)^{10!}+(50!)^{50!}+(100!)^{100!}$.

Find the unit's place digit of \((1!)^{1! + (2!)^{2!} + (3!)^{3!} + \cdots + (100!)^{100!}\).}

If one is added to the second digit of each number and one is subtracted from the third digit of each number and then if the first and third digits of each number are interchanged, then which number will be lowest?

Given that x2018 y2017 = 1/2 and x2016 y2019 = 8, the value of x2+y3 is

How many two-digit numbers, with a non-zero digit in the units place, are there which are more than thrice the number formed by interchanging the positions of its digits?

If the sum of squares of two numbers is 97, then which one of the following cannot be their product?

If u2+(u-2v-1)2 = -4v(u+v),then what is the value of u+3v?

If A = {62n -35n -1: n = 1,2,3,...} and B = {35(n-1) : n = 1,2,3,...} then which of the following is true?

For two sets A and B, let AΔB denote the set of elements which belong to A or B but not both. If P = {1,2,3,4}, Q = {2,3,5,6,}, R = {1,3,7,8,9}, S = {2,4,9,10}, then the number of elements in (PΔQ)Δ(RΔS) is

What is the remainder obtained when the smallest prime number, when raised to the ninety second multiple of sixteen, is divided by two hundred and fifty seven?

Harsha received price money in a jackpot. He expressed the price money in the following way.
Consider a number 'N' that can be expressed in the form of prime factors 3, 5, 7 and 11. The total number of factors of N is 32. The difference between the largest and the smallest such number possible, given that each of these prime factors occur at least once, is the price money that Harsha won. What is the price money that Harsha won in the jackpot?

The smallest integer n for which 4n > 1719 holds, is closest to