Q71.Let (2x2 + 3x + 4) 10 = ∑20r=0 arxr. Then a13a7
What This Question Tests
This question tests the ability to find and relate coefficients of specific powers of x in the expansion of a multinomial raised to a power, utilizing the generalized binomial theorem.
Concepts Tested
Formulas Used
(a+b+c)^n = ∑ (n! / (i!j!k!)) a^i b^j c^k where i+j+k=n
General term in (x^p + x^q + x^r)^n
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📋 Question Details
- Chapter
- Binomial Theorem
- Topic
- Coefficients in binomial expansion of multinomials
- Year
- 2020
- Shift
- 04 Sep Shift 1
- Q Number
- Q71
- Type
- Numerical
- NCERT Ref
- Class 11 Mathematics Ch 8: Binomial Theorem
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