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Value of m

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Source: — Data Sufficiency |

by thephoenix » Sun Apr 25, 2010 9:44 am
imo e
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by neoreaves » Sun Apr 25, 2010 10:00 am
IMO C

m = -p + (-2)^p

1) p = even ...so p can be ...-100.....-2 , 0, 2, ....100

when p is negative

m = positive Even + positive Even fraction (as -2^p will be positive as p is even )
--> m > 1

if p = 0

m = 0 + 1 = 1 ( so m >1 doesnt hold here )

if p > 0

lets say p = 2

m = -2 + 4 = 2 and for other values (-2)^p is even bigger so m >1

Insufficient as m=1 or m>1

2) p^3 <= -1

if p = -1
m = 1 + (-2)^-1 = 1/2 thus m > 1 is not true

if p = -2
m = 2 + (-2)^-2 thus m >1 is true

c) m > 1 from 1) and 2 so its sufficient
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by ansumania » Sun Apr 25, 2010 5:49 pm
OA pl.
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by deepesh.gupta » Wed Apr 28, 2010 6:21 pm
OA is C

ansumania wrote:OA pl.
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