Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

In The Image Below Which clock is the odd one out?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

Find out which of the given views in the picture is accurately the top view of the given pyramid.

There was a strange boy who was born before his father. How can this be possible?

You are trapped in a room with two doors. One leads to certain death and the other leads to freedom. You don't know which is which.
There are two robots guarding the doors. They will let you choose one door but upon doing so you must go through it.
You can, however, ask one robot one question. The problem is one robot always tells the truth, the other always lies and you don't know which is which.
What is the question you ask?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

what does this below rebus represent identXQQQQQME

Can you move 2 matchsticks to form four equal sized squares.

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?