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The value of the positve integer n for w...

The value of the positve integer `n` for which the quadratic equation `sum_(k=1)^n(x+k-1)(x+k)=10n` has solutions `alpha` and `alpha+1` for some `alpha` is

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The correct Answer is:
k = 11
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FIITJEE-QUADRATIC EQUATION & EXPRESSION -ASSIGNMENT PROBLEMS (SUBJECTIVE) Level - II
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