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11-11-2016
Mathematics

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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

Respuesta :

nobillionaireNobley nobillionaireNobley

18-11-2016

Coefitient of a binomial expansion is given by nCr
Here, n = 7, r = 3 - 1
7C2 = 21

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