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

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

Before Mount Everest was discovered, what was the highest mountain in the world?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?