What is the next number in this series?

4,12,84,3612....

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

A family is trapped in a jungle. There is a bridge which can lead them to safety. But at one time, the bridge can only allow two people to pass through. Also, all of them are afraid of the dark and thus, they can't go alone.

Father takes 1 minute to cross, the mother takes 2 minutes, the son takes 4 and the daughter takes 5 minutes. While crossing the time taken will be according to the slower one. How can they all reach the other side in the minimum possible time?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travellers who passed by. If the traveller failed to solve the riddle, then the Sphinx killed him/her. And if the traveller answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

Our product and our sum always give the same answer. Who are we?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.