John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Jack was having a candle light dinner with his girlfriend. Suddenly a cold gush of wind entered through the open window and three of the ten candles were extinguished. Assuming that none of the other candles were extinguished.

How many candles are they left with in the end ?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

In the picture given below, can you find out which digit will take place of the question mark?