If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

Give it food and it will live; give it water and it will die.

If it took eight men ten hours to build a wall, how long would it take four men to build it?

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

I am the fastest animal but cannot climb the tree. What am I?

What number divided by 4 is the same as that number minus 4?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

If 2 workers can complete painting 2 walls in exactly 2 hours.

How many workers would be needed to paint 18 walls in 6 hours?

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?