If any term is taken from the expansion of binomial (x + 1) 10, the probability that the coefficient of the term is odd is () A. 211B. 311C. 411D. 511

We only consider the binomial coefficient. The binomial coefficient is 1, 10, 45120210252210120, 45, 10, 1. We get four odd numbers. If we take any one of the binomial coefficients, the probability of the coefficient being odd is p = 411, so we choose C

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