Seven chits are numbered $1$ to $7$. Three are drawn one by one with replacement. The probability that the least number on any selected chit is $5$, is
Seven chits are numbered $1$ to $7$. Three are drawn one by one with replacement. The probability that the least number on any selected chit is $5$, is
- A
$1 - {\left( {\frac{2}{7}} \right)^4}$
- B
$4\,{\left( {\frac{2}{7}} \right)^4}$
- C
${\left( {\frac{3}{7}} \right)^3}$
- D
None of these
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