A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

Can you write down eight eights so that they add up to one thousand?

What is so fragile that saying its name breaks it?

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

How can you take 2 from 5 and leave 4?

Can you find out the remainder when 3^300 is divided by 5?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

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