Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

John can place six large boxes or nine small boxes into a carton.

Can you find out in how many cartons can he place sixty-six boxes in total?

Can you solve below mathematical equation?

2^1234 - 2^1233

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

A Shopkeeper sold a few chickens to four different customers on a particular day. It was such that each customer purchased half of the remaining chickens and half the chicken more.

Can you find out how many chicken were sold by the shopkeeper on that day if we tell you that the fourth customer bought a single chicken ?