Jee MainSequences And SeriesJEE Main 2025 (Online) 3rd April Morning ShiftMCQ+4 / -12025ENHIThe sum $1+3+11+25+45+71+\ldots$ upto 20 terms, is equal toA7240B 8124C 7130D6982Check AnswerClear SelectionReveal AnswerShow Explanation