In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

what's the probability of getting a king or a queen from a pack of 52 cards?

The Puzzle: A girl, a boy, and a dog start walking down a road.

They start at the same time, from the same point, in the same direction.

The boy walks at 5 km/h, the girl at 6 km/h.

The dog runs from boy to girl and back again with a constant speed of 10 km/h. The dog does not slow down on the turn.
How far does the dog travel in 1 hour?

What is the largest number you can write with just 3 digits?

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

What you cannot hold but it is yours?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?