Count the number of triangles in the picture below:

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Chocolate costs 6 rupees and a Toy costs 5 rupees. If you have 32 rupees in total, how many chocolates and how many Toys can be purchased with that amount?

They are three errirs in this question. Can you find them?

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.

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...