I’m tall when I’m young, and I’m short when I’m old. What am I?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

What has many teeth, but cannot bite?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

Count the number of balls in picture below:

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

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?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?