Is m 0? (1) |m|/2 = 2 (2) m^3 = 64

Question

Is m > 0?

(1) |m|/2 = 2
(2) m^3 = 64

msk0657 · Answer

Given to find m > 0 ? Stat 1: |m|/2 = 2 => |m| = 4 => -4 < m < 4...Not sufficient...m can be any value... Stat 2: m^3 = 64 => m = 4. Sufficient... IMO option B is correct answer... OA please...will correct if I missed anything...

DAllison2016 · Answer

extbf{(1) } \frac{\vert m \vert}{2} = 2

\vert m \vert = 4\
m = \pm 4

Insufficient

extbf{(2) } m^3 = 64

From observation,  m > 0 , therefore either C or B

m = 4

Sufficent

(B) statement 2 alone is sufficient, but statement 1 alone is not sufficient to answer the question

deepthit · Answer

B is the ans
Statement 1 : m can be +4 or -4 not sufficient
statement 2: odd power, so sign remains same. hence m is positive and is equal to +4.

shashank1tripathi · Answer

IMO answer is B.

Statement 1: |x| /2 = 2. So, x can be 4 or -4. Insufficient.
Statement 2: x^3 = 64. This means x should be a positive number only in that case odd power of x will result in a positive number. Sufficient.

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Is m > 0? (1) |m|/2 = 2 (2) m^3 = 64

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