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Question
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
MCQ
Solution
`"2n"/(("n - 2")("n + 2"))`
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Number System (Entrance Exam)
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