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 [EAMCET 1991]

\[1-{{\left( \frac{2}{7} \right)}^{4}}\]

\[4\,{{\left( \frac{2}{7} \right)}^{4}}\]

\[{{\left( \frac{3}{7} \right)}^{3}}\]

Seven chits are numbered 1 to 7. Three are drawn one by one with repla

1.	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 [EAMCET 1991]
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
Answer» D. None of these

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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 [EAMCET 1991]

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