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shahdevine
- Master | Next Rank: 500 Posts
- Posts: 197
- Joined: Sun May 18, 2008 2:47 am
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There are 68 children in the cafeteria of a school and all of the children have something for lunch. Thirty-four of the children brought lunches from home, 23 of the children bought a drink from the cafeteria beverage machine, and 32 of the children bought fruit in the cafeteria. If 18 children did at least 2 of these things, how many children did exactly two of these things?
(A) 3
(B) 6
(C) 9
(D) 13
(E) 15
OA is E...
i tried using 3 venn formula, total=a+b+c - (sum of 2 group overlaps) - 2(all three) + neither.
and got
68=34+23+32-18-x+0
what am i missing here? plz help
(A) 3
(B) 6
(C) 9
(D) 13
(E) 15
OA is E...
i tried using 3 venn formula, total=a+b+c - (sum of 2 group overlaps) - 2(all three) + neither.
and got
68=34+23+32-18-x+0
what am i missing here? plz help
