What is the fastest way to double your money?

What is common among 11, 69, and 88?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

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?

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

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

Why are all black people so quick ?

Solve the puzzle by telling what does below picture means.

I have branches, but no fruit, trunk or leaves. What am I?

What two things can you never eat for breakfast?