SOLUTION: In a group of 35 students, 25 own MacBook, 17 own IPad2 and 9 own both MacBook and IPad2. If a student is chosen at random, find the probability that
a. he owns MacBook only
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Question 980720: In a group of 35 students, 25 own MacBook, 17 own IPad2 and 9 own both MacBook and IPad2. If a student is chosen at random, find the probability that
a. he owns MacBook only
b. he owns neither MacBook nor IPad2
c. he owns at least one of the gadgets mentioned
I draw a venn diagram about this
16 students have macbooks ONLY
9 students have both IPAD 2 and Macbook
17 students have IPAD 2
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
.
16 own Macbook only (25-9 who own both)
8 own IPad2 only (17-9 who own both)
9 own both
33 own at least one (sum of above 3 groups)
2 own neither (total-owns at least DISABLED_event_one= 35-33=2)
.
a. owns MacBook DISABLED_event_only= 16/35
b. owns neither MacBook nor IPad2=2/35
c. owns at least DISABLED_event_one= 33/35
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