Q65.The sum 3×13 + 5×(13+23) + 7×(13+23+33) +. . . . . upto 10th term is 12 12+22 12+22+32 (1) 660 (2) 600 (3) 620 (4) 680
What This Question Tests
This question requires identifying the general term of a series involving sums of powers of natural numbers and then summing this general term up to a specified number of terms.
Concepts Tested
Formulas Used
Σn = n(n+1)/2
Σn² = n(n+1)(2n+1)/6
Σn³ = (n(n+1)/2)²
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📋 Question Details
- Chapter
- Sequences & Series
- Topic
- Summation of Series
- Year
- 2019
- Shift
- 10 Apr Shift 1
- Q Number
- Q65
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 9: Sequences and Series
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