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3 years ago

PLEASE HELP 10 POINTS

Mathematics

1 answer:

Westkost [7]3 years ago

8 0

1/28. The probability that both songs are rock songs is 1/28.

The easiest way to solve this problem is using probability.

This is a example of probability without replacement, using the probability property of P(A∩B) = P(A)*P(B).

The probability of choose a rock song is P(A) = 2/8, and the probability to choose the second song from the 7 songs remaining and be rock song assuming that the first song that she picked was rock song is P(B) = 1/7.

The probability that both songs are rock song is:

P(A∩B) = P(A)*P(B)

P(A∩B) = (2/8)(1/7) = 2/56

P(A∩B) = 1/28

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