An unbiased coin is tossed n times. The probability of getting at least one tail is p and the probability of at least two tails is q and p - q = 5/32. What is the value of p + q?
A.57/32
B.53/32✓ Correct
C.51/32
D.1
Explanation
With n = 5: p = 1 - 1/32 = 31/32. q = 1 - 6/32 = 26/32. So p + q = 31/32 + 26/32 = 57/32. The answer is 57/32.
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