There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

Prove that twice of ten is the same as twice of eleven.

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

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

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

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

There is something which you can be arrested for attempting but not for successfully completing.

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?