what does this below rebus represent identXQQQQQME

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

A boy collects white seashells from the sea and brings them home every night. When he has enough of them, he decides to sell them to a trader.

The trader is ready to buy the shells and he asks the boy about the quantity. At this, the boy starts calculating. He has a giant box that contains 3 mini boxes. Two of them have another mini box inside. If the giant box can hold 50 shells, how many brown shells can he sell to the trader?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Why are all black people so quick ?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

12345 a famous South Indian actor
567 is a path in jumbled form
8 & 10 are same letters
9 is one among the first six alphabets.
WHO AM I?

It belongs to you, but other people use it more than you do. What is it?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10