Replace the question mark with the correct number in below Picture:

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

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

A newspaper is supposed to have 60 pages, but pages 24 and 41 are missing.
Which other pages won't be there?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

Which is Odd One Out and why?

4377

3954

9862

8454

9831

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

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?

When is the top of a mountain similar to a savings account?