Answer:
7 : 4 is the answer.
Explanation:
A bag contains 7 green marbles and 4 white marbles.
bag contains total marbles = 7 + 4 = 11 marbles
you select a marble at random.
The probability is 7/11 to select green marble, but the odds are 7:4.
odds are different than probability that is favorable : unfavorable
That is 7 chances for and 4 against.
so the answer would be 7 : 4.