List of top Quantitative Aptitude Questions on Number Systems asked in IBSAT

What is the least number of students in a class if they can be made to stand in rows of 8, 12 or 14 each?

Find the sum of all natural numbers from 48 to 99.

Find the value of 97+101+105+...........+221.

Which term of the series 545, 525, 505, 485.... is closest to zero?

What values of k will make 9x²+3kx+4 a perfect square?

A committee of five members is to be formed from among six boys and five girls. Find the number of ways of selecting the committee, if it is to consist of at least one boy and at least one girl?

When an integer 'n' is divided by 'k', the remainder is on When another integer 'm' is divided by 'k', the remainder is 2. What is the remainder when 'n x m' is divided by 'k'?

A two digit number is such that the unit digit mu tiplied by 3 is equal to three more than the sum of the digits. When the digits are reversed the resulting number is 18 less than the original number. Find the units digit of the original number.

Two positive integers differ by 5. The sum of their reciprocals is 9/14. Then one of the numbers is:

If S = (1 x 1!) + (2 x 2!) + (3 x 3!) + … + (11 x 11!), then (S + 5) when divided by 12! leaves a remainder of

N is a positive integer where 10 < N < 501. Let P and S denote the product of the digits of N and the sum of the digits of N respectively. The number of integers in the given range for which P + S = N is

Saga Internationals have conducted a chess competition between young boys and girls, wherein every individual has to play exactly one game with every other individual. It was found that in 66 games, both the players were girls, and in 210 games, both were boys. Find the number of games in which one player was a boy and the other was a girl.

When the digits of the number 14 are reversed, the number increases by 27. How many other two-digit numbers increase by 27 when their digits are reversed?

The sum of four consecutive two-digit odd numbers, when divided by 10, becomes a perfect square. Which of the following can possibly be one of these four numbers?

When a two-digit number is divided by the sum of its digits, the quotient is 7 and the remainder is 6. If one of the digits of the number is three, then what is the difference of the digits?

Two numbers when divided by a certain divisor leave remainders of 11 and 17 respectively. If their product is divided by the same divisor, the remainder is 19. Which of the following could be the divisor?

If n is a natural number less than or equal to 5, for how many values of n is 3ⁿ- n a prime number?

If x and y represent the least numbers to be added to 624672 and 135790 respectively to make then multiples of 11, then in how many ways can (X x Y)² be expressed as a product of 2 different numbers?

When a certain single digit number multiples with 1,234, the units digit and the thousand’s digit will be the same in the product. What is the number formed by the other two digits in the same order?

If ‘y’ is a number such that y = x^x , where x is a positive integer, what is the difference between the largest possible two-digit value of y and the smallest possible three-digit value of y?

Mahesh’s age is a two-digit number. The peculiarity of the number is that when divided by the sum of its digits, the quotient is 2 and the remainder is 8. If the digits are interchanged and the resulting number is divided by the sum of its digits, the quotient is 8 and the remainder is 2. What is Mahesh’s age?

A fruit vendor brought a bag full of mangoes to the market. He kept some of the mangoes into the basket and put them for sale. He sold one-third of the mangoes in the basket to Mr. A and adds 18 more to it. He sold three-fourth of the remaining mangoes in the basket to Mr. B, and adds 12 more to it, after which he left with 25 mangoes in his basket. How many mangoes did the fruit vendor take in his basket in the beginning?

The difference between the largest and the smallest prime numbers below 100 is a multiple of two prime numbers. What is the sum of these prime numbers?

Anu collected certain number of coins of denominations `1,`2 and `5. She has certain number of `2 coins, 4 times as many `1 coins as `5 coins and 15 more `2 coins than `1 coins. If the total value is `490, how many `2 coins are there?

A series is formed in such a manner that the first term is the first natural number, the second is the square of the first term, the third term is the third natural number and fourth is the square of the third term and so on. What is the sum of the first 50 terms of the series?