A) \[^{7}{{C}_{4}}\,{{\left( \frac{1}{6} \right)}^{4}}{{\left( \frac{5}{6} \right)}^{3}}\]
B) \[^{7}{{C}_{4}}\,{{\left( \frac{1}{6} \right)}^{3}}{{\left( \frac{5}{6} \right)}^{4}}\]
C) \[{{\left( \frac{1}{6} \right)}^{4}}{{\left( \frac{5}{6} \right)}^{3}}\]
D) \[{{\left( \frac{1}{6} \right)}^{3}}{{\left( \frac{5}{6} \right)}^{4}}\]
Correct Answer: A
Solution :
Required probability \[={}^{7}{{C}_{4}}{{\left( \frac{1}{6} \right)}^{4}}{{\left( \frac{5}{6} \right)}^{3}}.\]
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