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 ?

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?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

I know a nine-letter word having only one vowel.
Do you ?

I don't get anymore wetter, no matter how much rain falls on me.

John was piloting a plane behind a car but was never able to overtake it. Why?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.