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# For any number n, (n) is 10 multiplied by the largest

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Joined: 04 Jul 2006
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Kudos [?]: 158 [0], given: 0

For any number n, (n) is 10 multiplied by the largest [#permalink]  27 Sep 2006, 01:47
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For any number n, â‚¬(n) is 10 multiplied by the largest integer that is smaller than (n+5)/10.
If a,b and c are positive integers, is â‚¬(a+b+c)> â‚¬(a)+â‚¬(b)+â‚¬(c)?

(1) 1<a<b<c
(2) abc=154

Last edited by kevincan on 27 Sep 2006, 03:47, edited 1 time in total.
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Joined: 18 Sep 2006
Posts: 43
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Kudos [?]: 1 [0], given: 0

Should be B
abc=154 implies (a,b,c)=2, 7, 11
Putting in the values in the equation gives
E(a+b+c)=E(a)+E(b)+E(c)=20 so B is sufficient.

A could give different answers depending on numbers chosen.[/list]
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