A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Prove that the below maths equation is true.

8 + 8 = 91

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

O_er_t_o_

Complete the missing letters of the given word.

Can you place six X (crosses) in below board without making three in a row in any way ?

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

Akbar called Birbal and asked him to draw a line on the floor. He asked Birbal to make that line smaller without erasing it. Birbal smiled and did it before Akbar could blink his eyes.

How did he managed to do it?

What is the Surname of Barbie Doll?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?