What is the coolest letter in the alphabet?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Can you make four (4) nines (9) equal 100?

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

Can it be possible to build a house that has all its four walls facing towards the South?

Two Twins Jack and Jill were standing back to back and suddenly they started running in opposite direction for 4 kilometres and then turn to left and run for another 3 kilometres.

what is the distance between the Baggio twins when they stop ?

Find the missing number in the image below.

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

You need to move three matchsticks to form three squares. Can you do it?