A bank customer had $100 in his account. He then made 6 withdrawals. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left
$50 $50
$25 $25
$10 $15
$8 $7
$5 $2
$2 $0
----- -----
$100 $99

Why are the Totals not tallying?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Count the number of triangles in the picture below:

What is the next number?

77, 49, 36, 18 ?

What came first, the chicken or the egg?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

What have one eye but still cannot see?