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 ?

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?

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

Count the number of squares in the picture below.

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

What makes this number unique: 8,549,176,320?

A non-stop marathon is the shared favourite sport of three brothers.

*The oldest one is fat and short and trudges slowly on.
*The middle brother's tall and slim and keeps a steady pace.
*The youngest runs just like the wind, speeding through the race.

"He is young in years, we let him run!" the other two brothers explained, "'because though he is surely number one, he is second, in a way." Why is it?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

Can you name some countries which do not have the alphabet 'A' in them?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'