Why are all black people so quick ?

If 21x = 79x, what is the value of x?

What does Alexander the Great and Winnie the Pooh have in common?

In a guessing game, five friends had to guess the exact numbers of apples in a covered basket.
Friends guessed 22, 24, 29, 33, and 38, but none of the guesses was correct. The guesses were off by 1, 8, 6, 3, and 8 (in random order).

Can you determine the number of apples in a basket from this information?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

Imagine a box with two cogwheels, one big with 24 teeth and one small with 8 teeth. The big one is firmly attached to the center of the box which means it does not turn or move while the small one rotates around the big one.

How many times do you think that the smaller wheel will turn compared to the box when it turns once around the big one?

John was piloting a plane behind a car but was never able to overtake it. Why?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?