On a bright sunny day, two fathers took their son fishing in the lake. Each man and son were able to catch one fish. When they returned to their camp, there were only three fishes in the basket. What happened?

PS: None of the fish were eaten, lost, or thrown back.

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?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

What's a single-digit number with no value?

In which direction should the missing arrow point?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

I have thought of a number that is made up by using all the ten digits just once. Here are a few clues for you to guess my number:

First digits is divisible by 1.
First two digits are divisible by 2.
First three digits are divisible by 3.
First four digits are divisible by 4.
First five digits are divisible by 5.
First six digits are divisible by 6.
First seven digits are divisible by 7.
First eight digits are divisible by 8.
First nine digits are divisible by 9.
The number is divisible by 10.

Can you find out the number ?

What has 88 keys?