Q64.Let a1, a2, a3, โฆ be an A.P, such that q3 a1+a2+a3+โฆ+aq a21 (1) 41 (2) 31 11 121 (3) 11 (4) 121 41 1861
What This Question Tests
This question, despite minor text corruption, is a standard problem testing the relationship between the ratio of sums of terms in an AP and the ratio of individual terms, requiring careful application of formulas and properties.
Concepts Tested
Formulas Used
Sn = n/2 * (2a + (n-1)d)
an = a + (n-1)d
If Sp/Sq = p^2/q^2, then ap/aq = (2p-1)/(2q-1)
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๐ Question Details
- Chapter
- Sequences & Series
- Topic
- Arithmetic Progression (AP)
- Year
- 2013
- Shift
- 09 Apr Online
- Q Number
- Q64
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 9: Sequences & Series
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