One night, a woman receives a call from the police. They tell her that her husband was murdered and that she should come to the crime scene as soon as possible. The woman drops the phone, shocked, and drives 20 minutes to the crime scene. As soon as she reaches the crime scene, the police arrest her and she is convicted of murder. How do the police know she committed the crime?

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

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?

What is the largest number you can write with just 3 digits?

How many bananas can you eat if your stomach is empty?

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.

Replace the question mark with the correct number.

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

How many triangles are there on the puzzle below?