How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

Why do people go to bed?

Whats the next number in the below number sequence pattern.

You have two bottles of pills marked with labels A and B. The pills are identical. The doctor has asked you to take one A pill and one B pill daily. You cant take more or less than that.

While taking out the pills one day, you took out one pill from A and by mistake took out two from B. You have no idea which pill is which now.

You cant throw away the expensive pills. What will you do now?

There is a place where if I stand up straight, I will still be considered sideways.

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

What is the next number in this series?

4,12,84,3612....

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?