If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

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

Find the missing number in the image below.

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?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

What has one eye, but can’t see?

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

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

Can you count the number of quadrilaterals in the picture below?