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Sequences and Series question

2024 · 31 Jan · Shift 2 · Q44
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  5. /2024 · 31 Jan · Shift 2 · Q44

Sequences and Series question

2024 · 31 Jan · Shift 2 · Q44

JEE MainMathematicsSequences and SeriesMCQ+4 / −1
Let 2nd ,8th 2^{\text {nd }}, 8^{\text {th }}2nd ,8th  and 44th 44^{\text {th }}44th  terms of a non-constant A. P. be respectively the 1st ,2nd 1^{\text {st }}, 2^{\text {nd }}1st ,2nd  and 3rd 3^{\text {rd }}3rd  terms of a G. P. If the first term of the A. P. is 1, then the sum of its first 20 terms is equal to -
  1. A
    990
  2. B
    980
  3. C
    960
  4. D
    970
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