10+10 and 11+11 can give you the same answer.

Explain how?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

What type of tree can I carry in my hand?

The following question it puts forth you:

25 - 55 + (85 + 65) = ?

Then, you are told that even though you might think it's wrong, the correct answer is actually 5!

Whats your reaction to it? How can this be true?

Find the next number in the sequence

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

There is something which you can be arrested for attempting but not for successfully completing.

What does this mathematical rebus means ?