What's the best place to go shopping in the ocean?

What can you catch but never throw?

Two guards were guarding the camp.Guard-1 was looking towards the south to make sure no threat is coming from the road.Guard-2 was looking at the north to make sure no threat is coming from the top. Suddenly Guard-1 ask the Guard-2 why he is smiling?How Guard-1 knows that Guard-2 is smiling?

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

Why do people go to bed?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Intelligence Agency need to break the vault but the problem is that they are not able to break the vault.

On the vault, a text is written as:

31 11 33 33 43 45
21 25
31 24 11 31 51 41

To Break the code Intelligence Agency brings a mathematician named Joseph.
Minutes later he deciphers the code.

Whats the code?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

A man dies of old age on his 25 birthday. How is this possible?