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Question
Choose the correct alternative:
Let X represent the difference between the number of heads and the number of tails obtained when a coin is tossed n times. Then the possible values of X are
Options
i + 2n, i = 0, 1, 2 …, n
2i – n, i = 0, 1, 2 …, n
n – i, i = 0, 1, 2 …, n
2i + 2n, i = 0, 1, 2 …, n
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Solution
2i – n, i = 0, 1, 2 …, n
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