What is the next number in this series?

4,12,84,3612....

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

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

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?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

In the four images below, can you find the odd one out?

There is a family that live in a round house. The two parents go out for a movie and leave a babysitter to watch their son. They come back and the kid was not there. Some one kidnapped him. The maid said she was cleaning in a corner. The cook said he was making pizza. The babysitter said she was getting a board game. Who kidnapped him.

When my father was 31 I was 8. Now he is twice as old as me. How old am I?