Sequences and Series: JEE Mains 2022 June 29 Shift 2

Medium· Arithmetic progression· +4 / 0
Let 3,6,9,12,…3,6,9,12,\dots up to 7878 terms and 5,9,13,17,…5,9,13,17,\dots up to 5959 terms be two series. Then, the sum of the terms common to both the series is equal to ______.
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