Which number should replace the question mark?

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

Replace the question mark in the picture below.

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?

Can you decipher the two rows to find the hidden word?

What does below rebus means ?

What is the unique property of the following words ?
* Revive
* Banana
* Grammar
* Voodoo
* Assess
* Potato
* Dresser
* Uneven

What does this rebus riddle mean?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.