Problem Solving (PS) | A fair-sided coin is tossed three times. What is the probability that

Is this a correct approach?
Probability of do not get at least 2 consecutive heads P(A) + probability of get at least 2 consecutive heads P(B) = 1

P(A) = 1 - P(B)

How many times do I get at least 2 consecutive heads ?

HHT (1/8) or THH (1/8) or HHH (1/8)

So P(B) = 3/8

P(A) = 1 - 3/8 = 5/8
Answer C

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