Which number should replace the question mark?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Two old friends, Jack and Jill, meet after a long time, and discussing as:

Jack: Hey, how are you, man?

Bill: Not bad, got married and I have three kids now.

Jack: That's awesome. How old are they?

Bill: The product of their ages is 72 and the sum of their ages is the same as your birth date.

Jack: Cool..But I still don't know.

Bill: My eldest kid just started taking piano lessons.

Jack: Oh, now I get it.

How old are Bill's kids?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

How many triangles can you count in the figure given?

A man was just doing his job when his suit was torn. Why did he die three minutes later?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?

You need to arrange three 7 and mathematical symbols to form number 1?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.