Be active and find the killer in the picture Riddle below.

John is the son of Jacob.
So,
Jacob is the_____of John's father?

After a heavy Thanksgiving meal, the night watchman went to work. In the morning, he told his boss he had dreamed that a saboteur planted a bomb in the factory and that he felt it was a warning. The boss promptly fired him. Worker confused, Why boss fire him?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

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?

Can it be possible to build a house that has all its four walls facing towards the South?

Why did Navjot Singh Sidhu put the new January calendar in the freezer

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

Prove that twice of ten is the same as twice of eleven.