Answer:
75%
Step-by-step explanation:
there are more blue marbles that red ones
3/7 of the marbles are red, 4/7 blue
P(both red) = 3/7 × 3/7 = 9/49
P(both blue) = 4/7 × 4/7 = 16/49
P(same color) = 9/49 + 16/49 = 25/49
Answer: 25/49
