Number Systems

Welcome to your Number Systems

(Please attempt all questions for proper score)

If one-third of one-fourth of a number is 15, then three-tenth of that number is:

Three times the first of three consecutive odd integers is 3 more than twice the third. The third integer is:

The difference between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two digits of that number?

The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?

The sum of the digits of a two-digit number is 15 and the difference between the digits is 3. What is the two-digit number?

The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is:

A number consists of two digits. If the digits interchange places and the new number is added to the original number, then the resulting number will be divisible by:

In a two-digit, if it is known that its unit's digit exceeds its ten's digit by 2 and that the product of the given number and the sum of its digits is equal to 144, then the number is:

Find a positive number which when increased by 17 is equal to 60 times the reciprocal of the number.

The product of two numbers is 9375 and the quotient, when the larger one is divided by the smaller, is 15. The sum of the numbers is:

The product of two numbers is 120 and the sum of their squares is 289. The sum of the number is:

A number consists of 3 digits whose sum is 10. The middle digit is equal to the sum of the other two and the number will be increased by 99 if its digits are reversed. The number is:

The sum of two number is 25 and their difference is 13. Find their product.

What is the sum of two consecutive even numbers, the difference of whose squares is 84?

Which one of the following is not a prime number?

It is being given that (232 + 1) is completely divisible by a whole number. Which of the following numbers is completely divisible by this number?

What least number must be added to 1056, so that the sum is completely divisible by 23 ?

How many of the following numbers are divisible by 132 ? 264, 396, 462, 792, 968, 2178, 5184, 6336

The largest 4 digit number exactly divisible by 88 is:

Which of the following is a prime number ?

What is the unit digit in {(6374)^1793 x (625)^317 x (341^491)}?

The sum of first five prime numbers is:

The difference of two numbers is 1365. On dividing the larger number by the smaller, we get 6 as quotient and the 15 as remainder. What is the smaller number ?

If the number 517*324 is completely divisible by 3, then the smallest whole number in the place of * will be:

The sum of first 45 natural numbers is:

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