^ { 2 n } C _ { 2 } : C _ { 2 } = 12 : 1 – InterviewSolution

1.

^ { 2 n } C _ { 2 } : C _ { 2 } = 12 : 1

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but this answer is not satisfie

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The solution is correct. Please check your question. The question might be 2nC3 : nC3.

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