निम्नलिखित में

A two-digit number is 5 times the sum of its digits. If 9 is added to the number, the digits get reversed. Find the number.

Find the largest three-digit number that leaves '3', '4' and '5' as remainder when it is divided by '7', '8' and '9', respectively.

What will be remainder if 2⁹⁰⁸⁸/ 6?

If the 4-digit number y29z is exactly divisible by 9, what is the least value of (y + z)?

A number 'N' when divided by 14 leaves 6 as remainder. If 9N² is divided by 14, then find the remainder.

Sandeep can solve 20 questions in 1 hour. If he decreased his efficiency by 20%, then how much time would he take to solve the same number of questions?

The sum of the digits of a two-digit number is 9, and when the digits are reversed, the number decreases by 45. Find the changed number.

‘N’ is the largest three-digit number that when divided by 6, 10 and 15 leaves a remainder 2. Find the sum of its digits.