If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

Replace the question mark with the correct number in below Picture:

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

It can be easily calculated that the digits 0 to 9 can be arranged into 3628800 distinct ten-digit numbers.

But do you know how many of these numbers are prime?

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

John can eat 27 chocolates in an hour, Jacob can eat 2 chocolates in 10 minutes, and Jolly can eat 7 chocolates in 20 minutes. How long will it take them to share and eat a box of 120 chocolates whilst playing Chess?

Can you find out who is the kidnapper in below Picture and why, Explain ?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag