A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

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

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

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

You are mixing a mixture of cement and Sand with five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four-gallon bucket and a seven-gallon bucket and neither has graduation marks. Find a method to measure five gallons.

Detective Rockford was jogging near the beach at 4:30 am.
He hears a sound near the shack "No Michael, Please Do not shoot me".
Next instance he heard the sound of gunfire. Rockford rushes to the shack where he finds women lying dead and a gun in close proximity of three "Doctore Lawyer and a Teacher".

Rockford immediately knew that the Lawyer has committed the crime. How?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

How many times do a clock's hands overlap in a day ?

I am sure no one can have two things for dinner. what are they?

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?