A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

what's the probability of getting a king or a queen from a pack of 52 cards?

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

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

Next Number in the Series,

5, 16, 49, 104, ?

Jim has three close friends at his school: Michael, John and Alice. Two of them play football, two play basketball and two play hockey. The friend who does not play hockey does not play basketball as well. The friend who does not play football does not play hockey.

Can you identify which sport/s is played by which person?

John is looking at Jenifer, but Jenifer is looking at Jacob. John is married, but Jacob is not.

Is a married person looking at an unmarried person ?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

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?