Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

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

John went to buy some expensive, foreign chocolates. He only had Rs 100 with him. When he reached the shop, he got out and know that on those chocolates, there was a 15% import duty and 5% VAT.

How much worth chocolate should he buy so that he can accommodate it in Rs 100?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

Rearrange the letters in "new door" to make one word.

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

While sitting in the Car, John suddenly finds that one of the wheels was missing. John noticed that a killer is approaching towards him. John cannot get out of the car.

How will John escape?

What have one eye but still cannot see?

I make two people out of one. What am I?