It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

10+10 and 11+11 can give you the same answer.

Explain how?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?

Move four matchsticks to the below square to form three squares?

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

Find the number of squares in the below-given picture.

Count the number of balls in picture below:

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.