If eleven plus two equals one, what does nine plus five equal?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

John: "Hi Teacher, What is your favourite movie ?".
Chemistry Teacher: "Indium Cerium Platinum Iodine Oxygen Nitrogen".
Ten seconds later... John replied I got it.

Do you?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

Move three sticks of the spiral below to form a square.

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?