There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Do You See It?

John decided to give his bike 3 coats of paint. Which coat would go on the first?

I make two people out of one. What am I?

In a university, a professor gave a set of three problems to the three brilliant students of his class. See the image for the questions.

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

By moving just one matchstick, you need to make the below statement true. Can you do it?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

John is on an island and there are three crates of fruit that have washed up in front of him. One crate contains only apples. One crate contains only oranges. The other crate contains both apples and oranges.

Each crate is labelled. One reads 'apples', one reads 'oranges', and one reads 'apples and oranges'. He know that NONE of the crates have been labeled correctly - they are all wrong.

If he can only take out and look at just one of the pieces of fruit from just one of the crates, how can he label all of the crates correctly?