Answer:
133/1152
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
In this question:
19+15+14 = 48 marbles
Of which 19 are red, 15 are yellow and 14 are blue.
What is the probability of pulling out a blue marble, followed by a red marble, if you replace the blue marble first
Blue marble
48 marbles, of which 14 are blue.
So
Red marble
48 marbles, of which 19 are red.
So
Both:
So the correct answer is:
133/1152
