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Greatest positive integer less than or equal to y

Expert replies
Source: — Problem Solving |

by Brent@GMATPrepNow » Sun Dec 02, 2012 10:53 am
neeti2711 wrote:For any number y, y* is defined as the greatest positive even integer less than or equal to y. What is the value of 5.2 - 5.2*?

(A) 0.2
(B) 1.2
(C) 1.8
(D) 2.2
(E) 4.0
If y* is defined as the greatest positive even integer less than or equal to y, then 5.2* = 4 (since 4 is the greatest positive even integer that's less than or equal to 5.2)

So, 5.2 - 5.2* = 5.2 - 4 = [spoiler]1.2 = B[/spoiler]

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
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by neeti2711 » Mon Dec 03, 2012 4:02 am
isn't 5 the greatest possible integer less than 5.2?
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by MaRLo » Mon Dec 03, 2012 4:14 am
^ yes, but he wants the greatest EVEN integer less than 5.2 which is 4
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by neeti2711 » Mon Dec 03, 2012 4:21 am
ofcourse! thanks!
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