JEE Math Practice Question
Let A be the sum of the first 20 terms and B be the sum of the first 40 terms of the series 12 + 2.22 + 32 + 2.42 + 52 + 2.62 ........... If B - 2A = 100$$\lambda $$, then $$\lambda $$ is equal to
- A.496
- B.232
- C.248
- D.464
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