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joemama142000
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Of the five people in the city, 1 subscribed to magazine A, 14 Apr 2006, 19:49
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Of the five people in the city, 1 subscribed to magazine A, 2 subscribed to magazine B, 3 subscribed to magazine C, 5 subscribed to magazine D. If three people subscribed to two magazines and one person subscribed to all the magazines, how many magazines did the fifth person subscribe?



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vipin7um
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Of the five people in the city, 1 subscribed to magazine A, 14 Apr 2006, 19:53
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The fifth persor subscribed to 1 magazine. Magazine D.

- Vipin
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joemama142000
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Of the five people in the city, 1 subscribed to magazine A, 15 Apr 2006, 00:26
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oa is 1, what equation did you use vipin?
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s4ur4bh
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Of the five people in the city, 1 subscribed to magazine A, 15 Apr 2006, 07:41
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Quote:
Of the five people in the city, 1 subscribed to magazine A, 2 subscribed to magazine B, 3 subscribed to magazine C, 5 subscribed to magazine D. If three people subscribed to two magazines and one person subscribed to all the magazines, how many magazines did the fifth person subscribe?
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This is not a proper way to solve question but I think it works ....

Total number of subscriptions = 1(A) + 2(B) + 3(C) + 5(D) = 11

3 people subscribe to 2 magazines each (6 subscriptions)
1 person subscribes to all 4 (4 subscriptions)

Total subscriptions is 10

The difference is the answer. 1 magazine.
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Of the five people in the city, 1 subscribed to magazine A, 15 Apr 2006, 08:28
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This is how I solved this -

M T-----x y z w
----------------------
A 1-----1 0 0 0
----------------------
B 2-----1 1 0 0
----------------------
C 3-----1 0 1 1
----------------------
D 5-----1 1 1 1
-----------------------

T is total number of magazines.

x subscribed to all the magazines.

y,z, and w subscribed to two magazines each.

That leaves only one magazine left. Magazine D. For the fifth person.

HTH...



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