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Grade 12Algebra

Solve this question by using binomial theorem and it's rule only.

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Profile image of Sushant Prasad
6 Years agoGrade 12
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2 Answers

Profile image of Sanyam Shah
6 Years ago
Answer: s=∑r/ncr
               Write it as : s=∑(n-r)/ncr
               Add both of them
               2s=∑n/ncr
               2s/n=∑1/ncr=An
               Therefore 2s/n is your answer
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