By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

There was a strange boy who was born before his father. How can this be possible?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

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

Using Only Five 5's and any mathematical operator make sum as 37

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

John was a very careless driver, so his owner Jacob gave him an offer that he will get an incentive of Rs.30 for every bottle box he delivered without breaking it and he will be charged Rs.90 for every bottle box he broke. Jacob gave John 100 bottles-box to deliver. After delivery, Jacob paid John Rs.2400. How many bottles-box did John break?

Jack was having a candle light dinner with his girlfriend. Suddenly a cold gush of wind entered through the open window and three of the ten candles were extinguished. Assuming that none of the other candles were extinguished.

How many candles are they left with in the end ?

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?