It belongs to you, but other people use it more than you do. What is it?

81 x 9 = 801. What must you do to make the this equation true?

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

What happened when the wheel was invented?

Be active and find the killer in the picture Riddle below.

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

What makes this number unique: 8,549,176,320?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?