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?

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.

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

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?

I have branches, but no fruit, trunk or leaves. What am I?

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

How could a baby fall out of a twenty-story building onto the ground and live?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?