set of numbers

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set of numbers

by ruplun » Sun Jun 26, 2011 2:21 am
If S is the set of 4 numbers w,x,y and z, is the range of the numbers in S greater than 2?

(1) w-z>2
(2) z is the least number in S

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by Frankenstein » Sun Jun 26, 2011 3:10 am
Hi,
From(1): w-z > 2
Range is greater than 2 irrespective of values of x and y
Sufficient

From(2): z is least.
No, info about other numbers
Not sufficient

Hence, A
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by Sanjay2706 » Sun Jun 26, 2011 10:33 pm
Yes, for a second, I thought C was right.
However, looking closely at the question. if w-z> 2 Range will also be greater than 2.
So A is the right choice.