How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Can you count the number of blocks in the picture below?

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

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

Who are the happiest people in IPL match?

Using Only Five 5's and any mathematical operator make sum as 37

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What does this simple rebus mean?

When a clock is observed, the hour hand is at a minute mark and the minutes hand is six minutes ahead of it.

When the clock is observed again after some time, the hour hand is precisely on a different minute mark and the minute hand is seven minutes ahead of it.

Can you calculate how much time has elapsed between the two observations?

Can you move 2 matchsticks to form four equal sized squares.