Grade 11Algebra
Please answer the question attached as image as soon as possible.
Please answer the question attached as image as soon as possible.
1 Answer
Arun
Approved Tutor Answer7 Years agoDear student
it is wriiten in summation form as
sigma (r Cr/ Cr-1) = sigma ( r* (n- r+1/r) = sigma ((n+ 1) – r) = n (n+1) – n(n+1)/2 = n(n+1)/2
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algebra
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