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Solution for The Coefficients of the (R – 1)Th, Rth and (R + 1)Th Terms in the Expansion of (X + 1)N Are in the Ratio 1:3:5. Find N and R. - CBSE (Science) Class 11 - Mathematics

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Question

The coefficients of the (r – 1)thrth and (r + 1)th terms in the expansion of (x + 1)n are in the ratio 1:3:5. Find n and r.

Solution

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 NCERT Mathematics Textbook for Class 11 (with solutions)
Chapter 8: Binomial Theorem
Q: 10 | Page no. 171
Solution for question: The Coefficients of the (R – 1)Th, Rth and (R + 1)Th Terms in the Expansion of (X + 1)N Are in the Ratio 1:3:5. Find N and R. concept: General and Middle Terms. For the courses CBSE (Science), CBSE (Commerce), CBSE (Arts)
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