What has hands, but can’t clap?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

By using all numbers, i.e. 123456789 and subtraction/addition, operators number 100 can be formed in many ways.
Example: 98 + 7 + 6 - 5 - 4 - 3 + 2 - 1 = 100

But if we add a condition use of the number 32 is a must. Then there are limited solutions.
One of such solution is: 9 - 8 + 76 + 54 - 32 + 1 = 100

Can you tell me any other solution?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

There was a strange boy who was born before his father. How can this be possible?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

Spot 5 differences in two Christmas tree below: