What is the formula for binomial distribution?

(a) P [X = x] = ^nCn p^x q^n-x

(b) P [X = x] = ^xCx p^x q^n-x

(c) P [X = x] = ^nCx p^x q^n-x

(d) P [X = x] = ^nCx p^n q^n-x

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The origin of the question is Bernoulli Trials and Binomial Distribution topic in portion Probability of Mathematics – Class 12

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