A) \[\frac{7}{8}\]
B) \[\frac{1}{8}\]
C) \[\frac{5}{8}\]
D) \[\frac{3}{4}\]
Correct Answer: A
Solution :
[a] Let B denotes boy and 6 denotes girl. |
\[\therefore \] Total possible outcomes are |
\[\{BBB,BBG,BGB,GBB,BGG,GBG,GGB,GGG\}\]i.e., 8. |
Favourable outcomes of having atleast one boy are |
\[\{BBB,BBG,BGB,GBB,BGG,GBG,GGB\}\]ie., 7. |
\[\therefore \] Required probability\[=\frac{7}{8}\] |
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