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?

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?

What does this mathematical rebus means ?

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

A woman lives in a skyscraper thirty-six floors high and is served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

What does the below rebus puzzle mean?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Can you identify the Oscar-winning movie from the rebus below?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?