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

All of the flowers I have are orchids except two. All of the flowers I have are hibiscuses except two. All of the flowers I have are roses except two.

Can you tell me how many flowers I have?

What always comes into a house through the keyhole?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

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

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

Find the missing number in the image below.

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?