13
16
23
1
Correct answer is C
3nC2>0⟹3n!(3n−2)!2!>0
3n(3n−1)(3n−2)!(3n−2)!2>0
3n(3n−1)2>0
3n(3n−1)>0⟹n>0;n>13
The least number in the option that satisfies n>0;n>13=23
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