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 have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

If eleven plus two equals one, what does nine plus five equal?

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

What number do you get when you multiply all of the numbers on a telephone's number pad?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

Identify the 10 differences between the two given pictures.

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?