nikhilsrl wrote:if 0<r<1<s<2, which of the following must be less than 1?
I. r/s
II. rs
III. s - r
a) I only
b) II only
c) III only
d) I and II
e) I and III
OA is A. I am not able to eliminate II.
Please help solve this.
Try to disprove the answer choices.
II. rs < 1.
If r = 2/3 and s = 3/2, rs = 2/3 * 3/2 = 1.
Eliminate any answer choice that includes II.
Eliminate B and D.
III. s-r < 1.
If s = 3/2 and r = 1/2, s-r = 3/2 - 1/2 = 1.
Eliminate any answer choice that includes III.
Eliminate C and E.
The correct answer is
A.
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