What is the fastest way to double your money?

Find out the missing number in the picture attached:

John was a very careless driver, so his owner Jacob gave him an offer that he will get an incentive of Rs.30 for every bottle box he delivered without breaking it and he will be charged Rs.90 for every bottle box he broke. Jacob gave John 100 bottles-box to deliver. After delivery, Jacob paid John Rs.2400. How many bottles-box did John break?

Which letter of the alphabet has the most water?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

What number when divided in half becomes zero?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

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?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?