Question

If $\frac{^{n+2}C_{6}}{^{n-2}P_{2}}=11$, then n satisfies the equation :
(a) n² + n – 110 = 0
(b) n² + 2n – 80 = 0
(c) n² + 3n – 108 = 0
(d) n² + 5n – 84 = 0

Answer 1

option (a) is correct

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