I am an odd number. Take away a letter and I become even. What number am I?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

John asked Jack, "The time right now is 7 pm. Can you tell me what will be the time 23, 999, 995 hours later ?"

While Bella does not know the answer, do you ?

Can you find out the remainder when 3^300 is divided by 5?

Why Aeroplane windows are round?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

What is black when you buy it, red when you use it, and gray when you throw it away?

Can you solve this picture maths equation?

What has to be broken before you can use it?

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?