A) 0.65
B) 0.69
C) 0.54
D) 0.57
Correct Answer: B
Solution :
Total number of envelopes in the box =1000 Number of envelopes containing cash prize =10+100+200=310 Number of envelopes containing no cash prize = 1000 - 310 = 690 \[\therefore \]Required probability \[=\frac{690}{1000}=0.69\]You need to login to perform this action.
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