I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

You throw me out when you want to use me and you take me in when you don't want to use me.

Who Am I?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

What can jump higher than a building?

I have feet, but no legs. Which animal Am I?