Name a key which is hardest to turn.

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

Why is Saturday stronger than Monday?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

What is the last thing you take off before bed?

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

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

Can you find out who is the kidnapper in below Picture and why, Explain ?