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 The Next Number in this series.
1, 2, 6, 42, 1806 ?

What building has the most stories?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

A farmer and his neighbour once went to Emperor Akbar"s court with a complaint. "Your Majesty, I bought a well from him," said the farmer pointing to his neighbour, "and now he wants me to pay for the water."
"That"s right, your Majesty," said the neighbour. "I sold him the well but not the water!"?
The Emperor asked Birbal to settle the dispute. How did Birbal solve the dispute?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

Replace the question mark with the correct number in the below-given picture?