If (1 + x)n = C0 + C2x + C2Xn then "C"_1/"C"_0 + "2C"_2/"C"_1 + "3C"_3/"C"_2+ .......+ "nC"_"n"/"C"_"n-1" is equal to: - Mathematics

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MCQ

If (1 + x)n = C0 + C2x + C2Xn then `"C"_1/"C"_0 + "2C"_2/"C"_1 + "3C"_3/"C"_2+ .......+ "nC"_"n"/"C"_"n-1"` is equal to:

Options

  • `("n"("n+1"))/2`

  • `("n"("n"^2+1))/2`

  • `("n"("n+1"))/(2!)`

  • `("n"("n - 1"))/2`

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Solution

`("n"("n+1"))/2`

Concept: Number System (Entrance Exam)
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