Can you count the number of triangles in the picture below?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

Can you divide the below-given shape into four equal and identical pieces?

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

Count the Triangle in the figure given below:

A girl says this to her best friend: “I was born in 1955, and I celebrated my 17th birthday last weekend.” Her best friend thinks she’s lying, but she’s actually correct. How is that possible?

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.

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?