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GMATBootcamp Starts Sep 21
Chris Peckover, Target Test Prep GMAT expert
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Live Online Bootcamp Class with Top GMAT Expert Chris Peckover

Sep 21 to Oct 9, 2026

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Mon to Fri · 7:00 to 10:00 PM ET
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Logan Thompson
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Sep 6 to Dec 6, 2026

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Sun · 9:30 AM to 12:30 PM ET
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40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
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by sud21 » Thu Jan 26, 2012 11:54 pm
Of the 45 people who plan to buy newspapers, 12 bought Q, 15 bought R, 25 bought S, 8 bought both Q and S, 7 bought both R and S, 9 bought both Q and R, the number of the people bought all the three is the same as the number of the people who bought none, and 39 people bought at least one newspaper. How many people bought exactly one newspaper?
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by pemdas » Fri Jan 27, 2012 1:31 am
Q=12,R=15,S=25, Q&S=8, R&S=7, Q&R=9, #bought three=#bought none, at least one=39, find single buyers'#? Total#=45

#bought none+#bought three+#single buyers=45-12-15-25+8+7+9=17, #bought at least one=39 will make 39-8-7-9=15 bought some and (17-15)=2 is #bought none=#bought three
#single buyers=17-2-2=13
sud21 wrote:Of the 45 people who plan to buy newspapers, 12 bought Q, 15 bought R, 25 bought S, 8 bought both Q and S, 7 bought both R and S, 9 bought both Q and R, the number of the people bought all the three is the same as the number of the people who bought none, and 39 people bought at least one newspaper. How many people bought exactly one newspaper?
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