A) \[\frac{127}{128}\]
B) \[\frac{63}{64}\]
C) \[\frac{255}{256}\]
D) \[\frac{1}{2}\]
Correct Answer: A
Solution :
\[1-\int_{{}}^{{}}{P(All\,Head)+P(All\,Tail)}\] \[1=\left\{ \frac{1}{{{2}^{8}}}+\frac{1}{{{2}^{8}}} \right\}\] \[=1-\frac{1}{{{2}^{7}}}\] \[=1-\frac{1}{128}=\frac{127}{128}\]
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