The sum \(1+3+11+25+45+71+...\) up to \(20\) terms, is equal to [JEE Main 2025, 3 Apr (Shift 1)]
Q1
The sum \(1+3+11+25+45+71+...\) up to \(20\) terms, is equal to
[JEE Main 2025, 3 Apr (Shift 1)]
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