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06 Jan 2012, 03:56
Kudos
Bookmarks
N
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Question Stats:
67% (01:24) correct
33%
(02:54)
wrong
based on 11
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ssarkar
You can draw a venn diagram and get your answer.
There are 45 people.
"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."
Of 45, 39 people bought at least one paper so 6 people bought none. Therefore, 6 people bought all 3 newspapers.
Attachment:
Ques3.jpg [ 16.43 KiB | Viewed 3884 times ]
We see from the diagram that
17 - 3 - 6 - 2 = 6 people bought only Q
15 - 3 - 6 - 1 = 5 people bought only R
25 - 2 - 6 - 1 = 16 people bought only S
Number of people who bought exactly one paper = 6+5+16 = 27
06 Jan 2012, 04:44
Kudos
Bookmarks
27 using venn diagrams
19 Jan 2026, 00:28
Kudos
Bookmarks
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