JEE Math Practice Question
If $${ }^{2 n} C_{3}:{ }^{n} C_{3}=10: 1$$, then the ratio $$\left(n^{2}+3 n\right):\left(n^{2}-3 n+4\right)$$ is :
- A.$$27: 11$$
- B.$$2: 1$$
- C.$$35: 16$$
- D.$$65: 37$$
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