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candygal79
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Target question: Is x between 0 and 1 ?candygal79 wrote:Is x between 0 and 1 ?
1) x is between -1/2 and 3/2
2) 3/4 is 1/4 more than x
Statement 1: x is between -1/2 and 3/2
There are several values of x that satisfy this condition. Here are two:
Case a: x = 1/2, in which case x IS between 0 and 1
Case b: x = -1/10, in which case x is NOT between 0 and 1
Since we cannot answer the target question with certainty, statement 1 is NOT SUFFICIENT
Statement 2: 3/4 is 1/4 more than x
So, 3/4 = x + 1/4
In other words, x = 1/2
So, we can conclude that x IS between 0 and 1
Since we can answer the target question with certainty, statement 2 is SUFFICIENT
Answer = B
Cheers,
Brent
