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18 July, 08:50

Which of the following would be the coefficient of the third term of a binomial to the seventh power?

A. 10

B. 15

C. 21

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Answers (1)
  1. 18 July, 08:59
    0
    Coefitient of a binomial expansion is given by nCr

    Here, n = 7, r = 3 - 1

    7C2 = 21
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