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Each of letters in the word MAGICIAN are on separate cards, face down on the table. If you pick a card at
random, what is the probability that its letter will be I or M?

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Answer:

P(I OR M) = 3/8  or 0.375

Step-by-step explanation:

Probability of getting an M is 1/8

Probability of getting an I is 2/8

P(I OR M) = P(I) + P(M) – P(I AND M)

P(I OR M) = (2/8) + (1/8) - 0

P(I OR M) = 3/8  or 0.375

NOTE:  P(I AND M) = 0 because they are mutually exclusive