What month of the year has 28 days?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

What is so fragile that saying its name breaks it?

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

Before Mount Everest was discovered, what was the highest mountain in the world?

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

What is the difference between a jeweller and a jailer?

It is always ahead of me yet I can never see it. What is it?

Can you name four days which start with the letter 'T'?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?