You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?
Which alphabet letter is a question?
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 is a river so rich ?
What three numbers, none of which is zero, give the same result whether they’re added or multiplied?
If a wheel has 54 spokes, how many spaces are there between the spokes?
There is a straight highway. Four different villages lie on that highway. The distance between them is different. The third village is 60km away from the first village; the fourth is 40 km away from the second; the third is 10 km near to the fourth that it is to the second.
Can you calculate the distance between the fourth and the first village ?
Cristina was born in 1888. She just had her 30th birthday today how did that happen?
As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.
Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211
When can we add 2 to 11 and get 1 as the correct answer?
In 2011, people playing Foldit, an online puzzle game about protein folding, resolved the structure of an enzyme that causes an Aids-like disease in monkeys. Researchers had been working on the problem for 13 years. The gamers solved it in three weeks.
