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?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

Why do we preferably have round manhole covers and not square ones?

Can you write down eight eights so that they add up to one thousand?

I have branches, but no fruit, trunk or leaves. What am I?

Four children having five rocks each were playing a game in which they had to throw the rock at a particular solid area in the water. Child 1- Succeeded in throwing three rocks at a solid area but one of the rocks sunk. Child 3 - His aim was so bad that all rocks got sunk. Child 4- He was awesome and none of the rocks got sunk. Child 2 - Was the winner but was struck by a rock in the head and died. Who killed Child 2?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

If a wheel has 54 spokes, how many spaces are there between the spokes?

What has lots of eyes, but can’t see?