What is the fastest way to double your money?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

Find the missing number in the sequence below:

Find the value of "?" in the ball picture Riddle below:

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

What has 88 keys?

Can you find out which options fits best with the missing column?