Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

What is the next number in the series?

15 29 56 108 208 ?

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

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

I look flat, but I am deep. Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry, and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?

I travel all around the world but always stay in the corner. What am I?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

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

Solve this riddle by finding the odd one out from the rest.

What is the fastest way to double your money?