What should I use between "triple" vs. "all"?

If I have 2 pens and I want to say all of them are green, I can say "Both of them are green" but if I have 3 pens should I use "Triple of them are green" or "All of them are green"?

Solution 1:

You could go with any of the following:

All 3 of my pens are green,

All (of) my 3 pens are green,

My 3 pens are all green,

The word triple as an adjective means:

1. Three times bigger in size or amount

2. Having three parts or including three people or things, for example:

   a triple murder

   a triple heart bypass

When used as a verb, it means:

1. To cause (something) to become three times as great or as many
2. To become three times as great or as many

In mathematics:

to triple the number 4 is equivalent to multiplying 4 by 3,

written numerically as: (4 + 4 + 4) or (4 x 3) = 12

Source: M-W

Hope that helps.

Solution 2:

You can say "all my 3 pens are green" to mention the number of your pens and their color, simultaneously.

Solution 3:

I have three pens - all green.