How many people in a group of 50 own neither a fax machine

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How many people in a group of 50 own neither a fax machine nor a laser printer?

(1) The total number of people in the group who own a fax machine or a laser printer or both is less than 50.
(2) The total number of people in the group who own both a fax machine and a laser printer is 15.

OA E

Source: Official Guide
Source: — Data Sufficiency |