Why did Navjot Singh Sidhu put the new January calendar in the freezer

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

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?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

An ape is trying to climb on a pole that is 60 feet high. Due to the slippery surface, the ape climbs 3 feet in a minute only to slip back 2 feet.

How much time do you think the monkey will take to reach the top of the pole?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

You can hear me, but you can't touch or see me.

What am I?

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)