If ( 1+ X)N = C0 + C1x + C2x 2 + …..Cnx N , Then C0c2 + C1c3 + C2c4 + …..=Cn-2 Cn is Equal To: - Mathematics

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MCQ

If (1+ x)n = C0 + C1x + C2x2 + …..Cnxn , then C0C2 + C1C3 + C2C4 + …..=Cn-2 Cn is equal to:

Options

  • `"2n"/(("n - 2")("n - 2"))`

  • `"2n"/("n" . "n")`

  • `"2n"/(("n - 2")("n + 2"))`

  • none of these

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Solution

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

Concept: Number System (Entrance Exam)
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