Number of ways of selecting -n- objects taken -r- at a time is given as nCr-n-n-1- where order does not matter-

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Number of Ways of Selecting "k" Things Out of "n" Things at a Time

Number of way...

Question

Number of ways of selecting $^{'} n^{'}$ objects taken $^{'} r^{'}$ at a time is given as $^{n} C_{r} = \frac{n!}{(n - 1)!}$ , where order does not matter.

True

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False

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Similar questions

^{'} n^{'}

^{'} r^{'}

= \frac{n!}{(n - r)!}

Statement 2: Number of ways if Order does not matter

= \frac{n!}{(n - r)! \times r!}

^{n} C_{r}

n

r

^{n} C_{r + 1} +^{n} C_{r - 1} + 2 \times^{n} C_{r}

^{n} C_{r}

^{n} C_{r}

n

r

^{n} C_{r + 1} +^{n} C_{r - 1} + 2 \times^{n} C_{r}

N

r

n

(r \geq n)

N

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