I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

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

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

How is a fly different from a mosquito?

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

Explain how?

In a university, a professor gave a set of three problems to the three brilliant students of his class. See the image for the questions.

You can see it everyday, But cannot touch it at will. What is it?

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

What am I?