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Describe and correct error
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4 votes
Describe and correct error

Describe and correct error-example-1
User KRR
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3 votes
Option b, it should be multiplied.

Remember the two formulas:
P(A and B) = P(A) * P(B)
P(A or B) = P(A) + P(B) - P(A and B)
User Matthew Woodard
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