A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

I am quite hot but become too cold if you remove the first two letters. What am I?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

I have a big mouth and I am also quite loud! I am NOT a gossip but I do get involved with everyone's dirty business.

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

Can you divide the below-given shape into four equal and identical pieces?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?