JEE Main 20208 Jan, Evening shiftMathematicsMediumSequence and Series179× since 2002The sum, ∑n=17n(n+1)(2n+1)4\sum\limits_{n = 1}^7 {{{n\left( {n + 1} \right)\left( {2n + 1} \right)} \over 4}}n=1∑74n(n+1)(2n+1) is equal to ________.Your answerType your answer. Integers and decimals are accepted.CheckSkip · show solution
