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?

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

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

'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?

What number divided by 4 is the same as that number minus 4?

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

What word is represented by this rebus?

Can you name some countries which do not have the alphabet 'A' in them?