If r - 1- then nPr-nCr is

The correct options are A is an integer B an even number nbsp; ^nP_r/^nC_r =n!/(n r)!/n!/(n r)!r! =r! = even number since r gt;1 ...

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Rationalization Method to Remove Indeterminate Form

If r > 1, t...

Question

If $r > 1$ , then $\frac{^{n} P_{r}}{^{n} C_{r}}$ is

is an integer

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may be fraction

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is an odd number

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an even number

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Solution

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Similar questions

^{n} P_{r} =^{n} P_{r + 1}

^{n} C_{r} =^{n} C_{r - 1}

n

r

^{n} P_{r} =^{n} P_{r + 1}

^{n} C_{r} =^{n} C_{r - 1}

r

^{n} P_{r} =^{n} P_{r}_{+}_{1}

^{n} C_{r} =^{n} C_{r}_{-}_{1}

^{n} P_{r} =^{n} P_{r + 1}

^{n} C_{r} =^{n} C_{r - 1}

^{n} C_{r} =^{n} P_{r}

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