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Quadratic Equation and Inequalities question

2017 · Shift 0 · Q27
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  5. /2017 · Shift 0 · Q27

Quadratic Equation and Inequalities question

2017 · Shift 0 · Q27

JEE MainMathematicsQuadratic Equation and InequalitiesMCQ+4 / −1
If for a positive integer n, the quadratic equation x(x+1)+(x+1)(x+2)+....+(x+n−1‾)(x+n)x\left( {x + 1} \right) + \left( {x + 1} \right)\left( {x + 2} \right) + .... + \left( {x + \overline {n - 1} } \right)\left( {x + n} \right)x(x+1)+(x+1)(x+2)+....+(x+n−1​)(x+n) =10n= 10n=10n has two consecutive integral solutions, then n is equal to :
  1. A
    9
  2. B
    10
  3. C
    11
  4. D
    12
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