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?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

Why do you find that most of the buildings are deprived of the 13th floor?

What jumps when it walks and sits when it stands?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

Can you find out who is the kidnapper in below Picture and why, Explain ?

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

There is a certain crime, that if it is attempted, is punishable, but if it is committed, is not punishable. What is the crime?

What number should come in place of the question mark below?