A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

What is the centre of gravity?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

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

I make two people out of one. What am I?

What is the next number in the series?

15 29 56 108 208 ?