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?

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

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

If 21x = 79x, what is the value of x?

Name the three-letter word that can complete the below words:

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

You can see it everyday, But cannot touch it at will. What is it?

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

Can you solve this tricky maths equation problem by replacing it? mark with the correct symbol?

19834 -----: 187
15921 -----: 153
17561 -----: 139
13734 -----: ???

Be active and find the killer in the picture Riddle below.