I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

Who always enjoys poor health?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

Can you decipher the two rows to find the hidden word?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

James bond was pushed out of an aeroplane without any parachute.
He survived, How come?

The chance of Mr John winning the lottery is 10%. All participants lined up and Mr John is 4th in the row. The first three participants lose the lottery.

What is the chance of Mr John now?

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