I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

In the picture given below, can you find out which digit will take place of the question mark?

A sundial has the fewest moving parts of any timepiece. Which has the most?

What does below chemistry rebus means?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

Prove that the below maths equation is true.

8 + 8 = 91

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?