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If A and B are coefficients of x^r and x...

If A and B are coefficients of `x^r` and `x^(n-r)` respectively in the expansion of `(1 + x)^n`, then

A

`alpha=beta`

B

`alpha+beta=n`

C

`alpha=kbeta` for some constant k

D

`alpha+beta=2^(n)`

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A
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MCGROW HILL PUBLICATION-MATHEMATICAL INDUCTION AND BINOMIAL THEOREM-EXERCISE (LEVEL 1 Single Correct Answer Type Questions)
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