Timer
00:00
Answers
A
B
C
D
E
Stats
Difficulty—
Is rw = 0?
(1) −6 < r < 5
(2) 6 < w < 10
Answer: E
Source: Official guide
(1) −6 < r < 5
(2) 6 < w < 10
Answer: E
Source: Official guide
Target question: Is rw = 0?BTGModeratorVI wrote: ↑Sat Aug 08, 2020 7:03 amIs rw = 0?
(1) −6 < r < 5
(2) 6 < w < 10
Answer: E
Source: Official guide
Since each statement ALONE fails to provide information about both variables, let's jump straight to....
Statements 1 and 2 combined
There are several values of r and w that BOTH statements. Here are two:
Case a: r = 0 and w = 7, in which case rw = (0)(7) = 0
Case b: r = 1 and w = 7, in which case rw = (1)(7) = 7
Since we cannot answer the target question with certainty, the combined statements are NOT SUFFICIENT
Answer: E
Cheers,
Brent
