gaokao 2021 Q10

gaokao · China · national-A-science Permutations & Arrangements Probability via Permutation Counting

10. Arrange 4 ones and 2 zeros randomly in a row. The probability that the 2 zeros are not adjacent is [Figure]
A. $\frac{1}{3}$
B. $\frac{2}{5}$
C. $\frac{2}{3}$
D. $\frac{4}{5}$

10. Arrange 4 ones and 2 zeros randomly in a row. The probability that the 2 zeros are not adjacent is\\
\includegraphics[max width=\textwidth, alt={}, center]{bf05167e-5a98-4047-93b2-e56d7d5bb0b7-2_504_448_559_1097}\\
A. $\frac{1}{3}$\\
B. $\frac{2}{5}$\\
C. $\frac{2}{3}$\\
D. $\frac{4}{5}$

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