There are forty elephants and they have forty-fore heads. How can this be possible?

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?

Imagine you are in a room with no windows or doors. How will you get out?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Which point will the car reach to go out?

Here is a conversation between a couple who both are software professionals.

Husband: Hey! What is your date of birth?
Wife Replied Angrily: It is 591062400
Husband after doing some calculations replied, "Got It".

What is the DOB of the wife?

Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask.

Who are these two masked girls?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

What has many teeth, but cannot bite?

If 21x = 79x, what is the value of x?