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Source: — Data Sufficiency |

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by SanjeevK » Thu Jun 11, 2009 3:58 am
IMO E

Is y+z>48?
1) y is negative.
2) z>48

a: z not known. insufficient
b: y nt known. insufficient

combining a and b
y is not known. Hence insufficient

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by david2008 » Thu Jun 11, 2009 2:04 pm
Yup E