\( 3,6,9,12,15, \ldots \ldots, 120 \) find the sum of series. (A) 1960 (B) 1560 (C) 1760 - (D) 2460

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\( 3,6,9,12,15, \ldots \ldots, 120 \) find the sum of series.
(A) 1960
(B) 1560
(C) 1760
- (D) 2460
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