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If y is an integer, then the least possible value of |23–5| [#permalink]
06 May 2012, 08:41
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73% (01:20) correct
27% (00:23) wrong based on 204 sessions
If y is an integer, then the least possible value of |23 – 5y| is
A. 1 B. 2 C. 3 D. 4 E. 5
|23-5y| represents the distance between 23 and 5y on the number line. Now, the distance will be minimized when 5y, which is multiple of 5, is closest to 23. Multiple of 5 which is closest to 23 is 25 (for y=5), so the least distance is 2: |23-25|=2.