Prove that twice of ten is the same as twice of eleven.

How can you write nineteen in a manner that if we take out one, it becomes twenty?

There are two guys standing face to face in a room. On a wall, there is a clock. One of those is a prophet. He tells the other guy that he will be stabbed in the back in five minutes.

Shocked to hear that, the other guy stares at the clock. Just after the five minutes, he is stabbed on the back. Can you tell what happened?

When we see 2 but call 10?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

What is the next number in this series?

4,12,84,3612....

What does this simple rebus mean?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?