Complete the table series riddle by finding the number that can replace "??".

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

While sitting in the Car, John suddenly finds that one of the wheels was missing. John noticed that a killer is approaching towards him. John cannot get out of the car.

How will John escape?

Name a key which is hardest to turn.

When monkey rotate the gear, which mark will be hit 1 or 2 ?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

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

What is so fragile that saying its name breaks it?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?