Question

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?

Answer 1

P(I OR M) = 3/8 or 0.375

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