If there are 3 green marbles and 4 blue marbles in a box, what is the probability that a blind-folded person would pick a blue marble?
3 answers
You have 4 chances out of 7 of getting a blue marble.
If there are 3 green marbles and 4 blue marbles in a box, what is the probability that a blindfolded person would pick a blur marbles?
4/7