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?

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

Spot 5 differences in two Christmas tree below:

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

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

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

Replace the question mark with the correct number in the below-given picture?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?