10
QuizMultiple Choice

Binomial Probability — Unit test

Question 10 • College Prep Math B - IC26

In a randomly generated sequence of 24 binary digits (0s and 1s), what is the probability that exactly half of the digits are 0?

Answer
A
1352078
B
1.295
C
0
D
0.1612

Explanation

Each of the 24 digits has two equally likely possibilities, so there are 2²⁴ possible sequences. To have exactly 12 zeros, choose which 12 of the 24 positions contain zeros: there are (24 choose 12) = 2,704,156 such sequences. Thus the probability is 2,704,156 ÷ 16,777,216 ≈ 0.1612, which matches choice D.

AI-written and checked against the verified answer.

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