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06 Jun 2019, 07:20
Kudos
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
96% (00:20) correct
4%
(00:28)
wrong
based on 496
sessions
History
Date
Time
Result
Not Attempted Yet
Is k positive?
(1) k is between -2 and 3 on the number line.
(2) k is between 1 and 2 on the number line.
(1) k is between -2 and 3 on the number line.
(2) k is between 1 and 2 on the number line.
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06 Jun 2019, 07:30
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Bunuel
Target question: Is k positive?
Statement 1: k is between -2 and 3 on the number line.
Let's TEST some values.
There are several values of k that satisfy statement 1. Here are two:
Case a: k = 1. In this case, the answer to the target question is YES, k IS positive
Case b: k = -1. In this case, the answer to the target question is NO, k is NOT positive
Since we cannot answer the target question with certainty, statement 1 is NOT SUFFICIENT
Statement 2: k is between 1 and 2 on the number line.
In other words, k = 1.something
If k = 1.something, then the answer to the target question is YES, k IS positive
Since we can answer the target question with certainty, statement 2 is SUFFICIENT
Answer: B
Cheers,
Brent
