ps - â–“mâ–“

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ps - â–“mâ–“

by Xbond » Wed Nov 04, 2009 9:53 pm
Hi there,

I find the right solution but apparently it exists an other method to find it one by one. Could you explain your resolution method step by step. A prompt reply should be very apprecieted.


For all positive integers m, â–“mâ–“= 3m when m
is odd and ▓m▓ = ½m when m is even. Which of
the following is equivalent to â–“9â–“x â–“6â–“?
A) â–“31â–“
B) â–“54â–“
C) â–“36â–“
D) â–“27â–“
E) â–“18â–“

OA is D
Source: — Data Sufficiency |

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by xcusemeplz2009 » Wed Nov 04, 2009 9:58 pm
the expression can be simplified as 27*3 or 81

the only option which matches is D as it is equal to 3m or 3*27 i.e 81
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