There is something which is always coming but never arrives?

Chhote se Chintu Miyan,
Lambi si Pooch.
Jahan Jaye Chintu Miyan,
Wahan Jaye Pooch.

छोटे से चींटू मियाँ,
लंबी सी पूंछ।
जहाँ जाये चींटू मियाँ,
वहाँ जाये पूंछ।

Bolo kya?

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

10+10 and 11+11 can give you the same answer.

Explain how?

You need to move three matchsticks to form three squares. Can you do it?

I have teeth but i don't bite. Who Am I ?

What runs around the whole yard without moving?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

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 am a seven-letter word but if you remove four of my letters I will have one left. What word am I?