Q65.If ∑20i=1( 20Ci+20Ci−120Ci−1 ) 3 (1) 200 (2) 100 (3) 50 (4) 400
What This Question Tests
This question tests the ability to simplify a binomial coefficient expression using Pascal's identity and then sum the resulting terms, requiring careful interpretation of the given notation.
Concepts Tested
Formulas Used
nCr + nCr-1 = n+1Cr
nCr / nCr-1 = (n-r+1)/r
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📋 Question Details
- Chapter
- Binomial Theorem
- Topic
- Properties of binomial coefficients
- Year
- 2019
- Shift
- 10 Jan Shift 1
- Q Number
- Q65
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 8: Binomial Theorem
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