1. total of 50 students from school A and B participated in exactly one of two sports-cricket and hockey. If the probability of randomly selecting a hockey student from school B is x, is x > 3/5?
(1) 35 students participated from school A.
(2) There were a total of 12 students who played hockey..
hi,
there are 50 students who either play hockey or cricket and ar efrom either School A or B.. is prob of picking a student who is bothfrom school B and plays hockey >3/5..
lets see the statements..
1)(1) 35 students participated from school A.
we know now that the students from B are 15..
the prob of picking a school B student itself is 15/50..
even if we take the best scenario that all 15 play hockey.. the prob will be 15/50, which is less than 3/5.. suff
(2) There were a total of 12 students who played hockey..
here again we take the best scenario that all 12 are from school B..
th eprob will be 12/50, less than 3/5... suff
ans D
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