Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

Why is it very easy to weigh a fish?

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

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

When we see 2 but call 10?

In the four images below, can you find the odd one out?

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.