In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

2, 3, 5, 9, 17, _ What is the next number in the sequence?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

James bond was pushed out of an aeroplane without any parachute.
He survived, How come?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

A dying old man wants to divide his entire land between his only two sons. Since his only wish is to treat them as equal as both of them have been too good to him, he wants to divide his land equally between them. The problem is that the land is significantly irregular in shape and thus there is no choice of cutting them into two equal halves.

Can you help him divide the land in a manner that both of his sons will be happy?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.