The sum of the following series … … up to 15 terms, is :

Sequences and Series

JEE Main 2019 · 9 Jan, Evening shift · Q5308

MathematicsMedium178×since 2002Q5308

The sum of the following series

1 + 6 + {{9\left( {{1^2} + {2^2} + {3^2}} \right)} \over 7} + {{12\left( {{1^2} + {2^2} + {3^2} + {4^2}} \right)} \over 9}

+ {{15\left( {{1^2} + {2^2} + ... + {5^2}} \right)} \over {11}} + .....

up to 15 terms, is :

JEE Main 2019 · 9 Jan, Evening shift · Q5308

MathematicsMedium178×since 2002Q5308

The sum of the following series

1 + 6 + {{9\left( {{1^2} + {2^2} + {3^2}} \right)} \over 7} + {{12\left( {{1^2} + {2^2} + {3^2} + {4^2}} \right)} \over 9}

+ {{15\left( {{1^2} + {2^2} + ... + {5^2}} \right)} \over {11}} + .....

up to 15 terms, is :