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netcaesar
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netcaesar
Is z+z<z?

1) -4z>4z
2) z^3<z^2



A

question : is z < 0 ?

from 1) 0 > 8z or z < 0 hence sufficient

from 2) z could be either negative or positive ( 0 < z < 1)
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netcaesar
Is z+z<z?

1) -4z>4z
2) z^3<z^2


A

2z<z only if z is -ve.

Statement 1: z is negative SUFF

Statement 2: 0<z<1, or z<0 INSUFF
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Late but A for me as well.

Statement 2 could be a fraction or a negative number.



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