In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

Two natural numbers have a sum of less than 100 and are greater than one.

John knows the product of the numbers and Jacob knows the sum of numbers.

The following conversation takes place between them:
John: 'I am not aware of those numbers.'
Jacob: 'I knew you wouldn't be. I am not aware myself.'
John: 'Now I know them!'
Jacob: 'Now I know them, too!'

What are the two numbers?

What is both possible and impossible at the same time?

Can you count the number of triangles inside a triangle?

What number do you get when you multiply all of the numbers on a telephone's number pad?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

Why are all black people so quick ?

Who are the happiest people in IPL match?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?