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Director
Joined: 03 Jul 2003
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Each of the integers from 0 to 9, inclusive, is written on a [#permalink]
28 Jan 2004, 17:31
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19. Each of the integers from 0 to 9, inclusive, is written on a separate slip of blank paper and the ten slips are dropped into a hat. If the slips are then drawn one at a time without replacement, how many must be drawn to ensure that the numbers on two of the slips drawn will have a sum of 10?
(A) Three (B) Four (C) Five
(D) Six (E) Seven
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Manager
Joined: 26 Dec 2003
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Location: India
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E) Seven, I did this way lets say 0,9,8,7,6,5 are drawn then if u draw any of the other 4 we get the sum as 10, not sure, p& c is my weakling
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SVP
Joined: 16 Oct 2003
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Seven.
0 1 2 3 4 5 and then any other number will add to 10. Correct explaination please?
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