In a group of 100 students, 25 own a laptop, 40 own a mobile phone, and 35 own either a
laptop...
Mathematics, 31.03.2020 11:29 lizzyboo32
In a group of 100 students, 25 own a laptop, 40 own a mobile phone, and 35 own either a
laptop or a mobile phone, but not both. Find the probability that a student chosen at
random
(i) owns both a laptop and a mobile phone,
(ii) owns neither a laptop nor a mobile phone,
(iii) owns a laptop, given that he owns a mobile phone.
Answers: 3
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