Engr2012 wrote:
Mascarfi wrote:
If z is an odd integer, is 300z>1500?
Statement 1, 0<\(\sqrt{z}\)<8
Statement 2, 1<\(z^2\)<45
Statement 1, 0<\(\sqrt{z}\)<8
Statement 2, 1<\(z^2\)<45
Z= odd integer, is 300z>1500 ---> z>5 ?
Statement 1,\(0 < \sqrt{z} < 8\) ---> 1<z<64 so if z=3 or 5, answer is "no" but if z=7,9,11... the answer is "yes". Statement is not sufficient.
Statement 2,\(1<z^2<45\) --> only possible values are z=3 or 5, giving you a "no" . Sufficient.
B is the correct answer.
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