What has to be broken before you can use it?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

What is the last thing you take off before bed?

Move four matchsticks to the below square to form three squares?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?

What number divided by 4 is the same as that number minus 4?

What does this mathematical rebus means ?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?