How do you go from 98 to 720 using just one letter?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

During a secret mission, an agent gave the following code to the higher authorities
AIM DUE OAT TIE MOD

However, the information is in one word only and the rest are fake. To assist the authorities in understanding better, he also sent them a clue, If I tell you any one character of the code, you can easily find out the number of vowels in the codeword.

Can you find out the code word?

What has hands, but can’t clap?

Can you place six X (crosses) in below board without making three in a row in any way ?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

What word is represented by this rebus?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

John was piloting a plane behind a car but was never able to overtake it. Why?

Count the Triangle in the figure given below: