As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

I am white when I am dirty, and black when I am clean. What am I?

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

Our product and our sum always give the same answer. Who are we?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?