class 11 Math Algebra Sequences And Series

If, for a positive integer $n,$the quadratic equation,$x(x+1)+(x−1)(x+2)++(x+n−1)(x+n)=10n$has two consecutive integral solutions, then $n$is equal to : $10$ (2) $11$ (3) $12$ (4) $9$

Similar topics

determinants

matrices

binomial theorem

complex numbers and quadratic equations

sequences and series

determinants

matrices

binomial theorem

complex numbers and quadratic equations

sequences and series

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