What do you answer even though it never asks you questions?

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

3 6 12

4 8 16

5 10 ?

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?

What goes up but never comes down?

Wednesday, Steve and Pam go to a restaurant to eat lunch. After eating lunch, they pay the bill. But Steve and Pam do not pay the bill. So…who does?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

What has 13 hearts but no other organs?

You need to move three matchsticks to form three squares. Can you do it?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?