No one wants to have it, but if one got it, he does not want to lose it. What is It?

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

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

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

What does a man do only once in his lifetime, but women do once a year after they are 29?

Can you find out who is the kidnapper in below Picture and why, Explain ?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

Why is a river so rich ?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?