Q63.The sum of the series 1 + 2 × 3 + 3 × 5 + 4 × 7 + … upto 11th term is: (1) 945 (2) 916 (3) 946 (4) 915
What This Question Tests
The problem requires finding the general term of the given series, which is a product of terms from an arithmetic progression. Once the general term is found, standard summation formulas (sum of n, sum of n^2) are used to find the sum up to the 11th term.
Concepts Tested
Formulas Used
Tn = a + (n-1)d
Sn = n/2 * (a + l)
Sn = n/2 * (2a + (n-1)d)
Σn
Σn^2
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📋 Question Details
- Chapter
- Sequences & Series
- Topic
- Sum of series (AP and GP combination)
- Year
- 2019
- Shift
- 09 Apr Shift 2
- Q Number
- Q63
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 9: Sequences and Series
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