Bunuel wrote:
How many families in Jaytown own exactly two phones?
(1) 150 families in Jaytown own at least one telephone.
(2) 45 families in Jaytown own at least three telephones.
S1 - 150 families have atleast 1 phone.
No info on 2 phones.
Insufficient.
S2- 45 families have at least three telephones.
No info on 2 phones.
Insufficient.
Combining, we cannot obtain info on families having exactly 2 phones.
Answer E.
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