Prove that twice of ten is the same as twice of eleven.

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

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?

John went to buy some expensive, foreign chocolates. He only had Rs 100 with him. When he reached the shop, he got out and know that on those chocolates, there was a 15% import duty and 5% VAT.

How much worth chocolate should he buy so that he can accommodate it in Rs 100?

What occurs twice in a week, once in a year but never in a day?

Take away the whole and some still remain. What is it?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?