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MHT CET 2023 Mathematics question

MathematicsStatisticsMHT CET 2023

Three fair coins numbered 1 and 0 are tossed simultaneously. Then variance Var (X) of the probability distribution of random variable X, where X is the sum of numbers on the uppermost faces, is

Answer: (B)

Solution

Each coin shows or with probability each, so (the sum on three coins) takes values with probabilities . and

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Question ID VK-094796