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Source: — Data Sufficiency |
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by tohellandback » Wed Aug 19, 2009 9:43 pm
IMO A
1)M<0
Clearly,-M/5 and -5M are positive and -5M>-M/5
M-5 is negative
so -5M>-M/5>M-5
SUFF

2)
for M=0, all terms are 0
for M<0 ,as in 1
Not SUFF
The powers of two are bloody impolite!!
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