You are going to randomly select a marble from a bag of marbles that contains 3 blue marbles, 4 green marbles, and 5 red marbles.
What is P(blue marble)? Express your answer as a decimal.

Question

You are going to randomly select a marble from a bag of marbles that contains 3 blue marbles, 4 green marbles, and 5 red marbles.
What is P(blue marble)? Express your answer as a decimal.

anonymous · Answer

3 blue
4 green
5 red

uri · Answer

Probability that blue marble is selected?

anonymous · Answer

and i know youre here humphri

uri · Answer

favorable items
===========
total items 

favorable (blue)? =3
total (green,blue,red) =12
3/12
simplify