Number System, Problems on Number

The difference between two positive numbers is 3 and the sum of their squares is 369. Then the sum of the numbers is

If a two-digit positive integer has its digits reversed, the resulting integer differs from the original by 27. By how much do the two digits differ?

- 1 হতে কত বিয়োগ করলে বিয়োগফল 0 (শূণ্য) হবে?

Bowl S contains only marbles. If (1/4) of the marbles were removed, the bowl would be filled to (1/2) of its capacity. If 100 marbles were added, the bowl would be full. How many marbles are in bowl S?

Two-fifth of one-fourth of three seventh of a number is 15. What is the half of the number?

What is the value of n if (8-3) (8 - n) = 40?

If (x/y) > 0, which of the following must be true?

On dividing an individual number by 342, we get 47 as remainder. If the same number is divided by 18, what will be the remainder?

(0.75 × 4.4 × 2.4)/0.6 =?

If you write down all the numbers from 1 to 100, then how many times do you write 5?

The sum of the digits of two - digit number is 10, while when the digits are reversed, the number decrease by 54. Find the changed number.

In first 1000 natural numbers, how many integers exist such that they leave a remainder 4 when divided by 7 and a remainder 9 when divided by 11?

The sum of three consecutive odd integers is 40 more than the first of the numbers. What is the middle number?

If n is an odd integer, which of the following must be an odd integer?

Sixty-five percent of a number is 21 less than; four-fifth of that number. What is the number?

If 0 ≤ x ≤ 4 and y < 6, which of the following cannot be the value of xy?

A scored 30% marks and failed by 15 marks. B scored 40% marks and obtained 35 marks more than those required to pass. The pass percentage is-

Find the next number in the following pattern: 320, 160, 80, 40,…

What is the square root of 0.16?

Max goes to the gym every fourth day, Ellen's exercise routine is every third day. Today is Monday and both Max and Ellen are at the gym. What will the day of the week be the next time they are both at the gym?