In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

Remove two matchsticks to make the below equation correct.

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

What's the only room from which no one can enter or leave

What has one letter and starts with an E?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Why is 6 afraid of 7?