The more you take me, the more you leave me behind.
Who Am I?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

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

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

What month of the year has 28 days?

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 ?

If eleven plus two equals one, what does nine plus five equal?