Question

There're some old video games you sell on Ebay for $6, $7 and $9. The titles include " The Pirates", "Under the sea" and "The driving test". What is the Probability of selling video games with no water theme for at least $7?

Answer 1

2/9 or 0.222

Explanation:

One with no water theme out of 3:

Probability = ⅓

2 prices atleast 7:

Probability = ⅔

⅓ × ⅔ = 2/9

Answer 2

2/9

Explanation:

We have 3 video games

I will assume that pirates have a water theme, so 2 have a water theme

That leaves 1 game with no water theme

P (no water theme) = games with no water theme/ total

=1/3

The games are 6 7 and 9 dollars

2 games are at least 7 dollars

P( at least 7 dollars) = games at least 7/ total

=2/3

P ( no water theme at least 7 dollars) = P (no water theme) * P( at least 7 dollars)

= 1/3*2/3

= 2/9