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?

The captain of a ship is telling you an interesting story and then poses a question. He says, “I have travelled the oceans far and wide. One time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly. Can you tell me how that was possible?”

What Does this text mean:

important=important

I am white when I am dirty, and black when I am clean. What am I?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Can you make four (4) nines (9) equal 100?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

Spot what is wrong here in below Picture?

People put me on the table and cut me but do not eat me. What am I?