A) \[7/30\]
B) \[3/10\]
C) \[3/5\]
D) \[1/5\]
Correct Answer: D
Solution :
Total outcomes \[=30\] Now, \[n+(50+n)>27\] \[\Rightarrow \] \[{{n}^{2}}-27n+50>0\] \[\Rightarrow \] \[(n-2)\,(n-25)=0\] Favourable outcomes are 1,26,27,28,29,30. Number of favourable outcomes = 6 \[\therefore \] Required probability \[=\frac{6}{30}=\frac{1}{5}\]You need to login to perform this action.
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