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Qn #1550
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Suppose r integers, 0 < r < 10, are chosen from (0, 1, 2, ...,9) at random and with replacement. The probability that no two are equal, is
A.
$\frac{10!}{10! r!}$
B.
$\frac{10!}{10! (10-r)!}$
C.
$\frac{10!}{(10-2)! r!}$
D.
$\frac{10!}{10^{r} \times 10! \times r!}$
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❓ Question: Suppose r integers, 0 < r < 10, are chosen f... | TANCET Group Studies | Tancet Group Studies