There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

What is the next number in the series?

15 29 56 108 208 ?

Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?

Count the number of triangles in the given picture.

In the picture given below, can you find out which digit will take place of the question mark?

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

Can you write down eight eights so that they add up to one thousand?