Question

Two ballpoint pens are selected at random from a box that contains3 blue pens, 2 red pensand 3 green pens. If X is the number of blue pens

Answer 1

Answer: 3/(28) ≈ 10.7%

Explanation:

3 blue + 2 red + 3 green = 8 total pens

First pick and Second pick

`(3\ blue\ pens)/(8\ total\ pens)\quad * \quad (2\ remaining\ blue\ pens)/(7\ remaining\ total\ pens)\quad =\large\boxed{(3)/(28)}`