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ella [17]
3 years ago
12

Can someone help me? It's urgent and thank you!

Mathematics
2 answers:
Rainbow [258]3 years ago
8 0

Answer:

option b : 15.2 %

Step-by-step explanation:

5 Red , 4 Blue,  3 Yellow

Total balls = 12

Probability \ of \ choosing \ red = \frac{5C_1}{12C_1} = \frac{5}{12}\\\\Probability \ of \ choosing \ blue \ without \ replacement  = \frac{4C_1}{11C_1} = \frac{4}{11}\\\\Probability \ of \ red \ and  \ then \ blue = \frac{5}{12} \times \frac{4}{11} = 0.1515\\\\Probability \ in \  percentage = 0.1515 \times 100 = 15.15 = 15.2 \%

Alex_Xolod [135]3 years ago
5 0

Answer:

15.2%

Step-by-step explanation:

There are 12 marbles in total and there are 5 red marbles, so the probability of getting a red marble is 5/12. There are now 11 marbles and there are 4 blue marbles. So the probability of getting a blue marble is 4/11.

You multiply these 2 values together.

5/12 * 4/11 = 20/132 = 0.1515

This is about 15.2%

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