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08 Apr 2017, 03:10
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C
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:
77% (00:43) correct
23%
(00:45)
wrong
based on 820
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History
Date
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Is \(y = 6\) ?
(1) \(y^{2} = 36\)
(2) \(y^{2} - 7y + 6 = 0\)
Source: Quant Review 1st Edition
(1) \(y^{2} = 36\)
(2) \(y^{2} - 7y + 6 = 0\)
Source: Quant Review 1st Edition
08 Apr 2017, 03:51
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Is \(y = 6\) ?
(1) \(y^{2} = 36\) --> \(y = 6\) or \(y = -6\). Not sufficient.
(2) \(y^{2} - 7y + 6 = 0\) --> \((y - 6)(y - 1) = 0\) --> \(y = 6\) or \(y = 1\). Not sufficient.
(1)+(2) Intersection of values from (1) and (2) is \(y = 6\). Sufficient.
Answer: C.
(1) \(y^{2} = 36\) --> \(y = 6\) or \(y = -6\). Not sufficient.
(2) \(y^{2} - 7y + 6 = 0\) --> \((y - 6)(y - 1) = 0\) --> \(y = 6\) or \(y = 1\). Not sufficient.
(1)+(2) Intersection of values from (1) and (2) is \(y = 6\). Sufficient.
Answer: C.
10 Apr 2017, 18:27
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1 is insufficient as y = - 6 or 6.
2 is insufficient as y is equal to 6 or 1
1 & 2 combined, y is 6.
Therefore, the answer is C
2 is insufficient as y is equal to 6 or 1
1 & 2 combined, y is 6.
Therefore, the answer is C
