If nC2 = 220 find the value of n
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given nC2=220
or, n(n-1)/2=220
or, n^2-n-440=0
discriminant of the eqution D= 1+4x440=1761 which is not a perfect square hence no value of n possible
or, n(n-1)/2=220
or, n^2-n-440=0
discriminant of the eqution D= 1+4x440=1761 which is not a perfect square hence no value of n possible
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