$$Is\ r<1?$$
$$(1)\ r>0$$
$$(2)\ r^2<1$$
The OA is B.
I need help with this DS question. Please, can any expert assist me with it? Thanks.
Is r < 1?
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(1) r > 0.swerve wrote:$$Is\ r<1?$$
$$(1)\ r>0$$
$$(2)\ r^2<1$$
The OA is B.
I need help with this DS question. Please, can any expert assist me with it? Thanks.
If say r = 1/2, the answer is Yes; however, if say r = 2, the answer is No. No unique answer. insufficient.
(2) r^2 < 1
=> -1 < r < 1
The answer is Yes. Sufficient.
The correct answer: B
Hope this helps!
-Jay
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