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02 Jun 2016, 21:36
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Difficulty:
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58% (01:04) correct
42%
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What is the value of |x| + |y| + xy, where x and y are integers?
(1) \(xy=17\)
(2) \(x=\sqrt{17^2}\)
Self made
(1) \(xy=17\)
(2) \(x=\sqrt{17^2}\)
Self made
02 Jun 2016, 21:54
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St1: xy = 17 is prime --> x * y = 1 * 17 or -1 * -17.
|x| + |y| + xy = 1 + 17 + 17 = 35.
Sufficient
St2: Clearly insufficient as we do not know the value of y.
Answer: A
|x| + |y| + xy = 1 + 17 + 17 = 35.
Sufficient
St2: Clearly insufficient as we do not know the value of y.
Answer: A
03 Jun 2016, 11:54
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chetan2u
What is the value of |x| + |y| + xy, where x and y are integers?
(1) \(xy=17\)
(2) \(x=\sqrt{17^2}\)
Self made
(1) \(xy=17\)
(2) \(x=\sqrt{17^2}\)
Self made
|x| + |y| + xy
(1) \(xy=17\)
Since x and y are integers x and y can have values -1, -17 or vice versa or 1,17 or vice versa.
Irrespective of the sign |x| and |y| will be +ve.
1+17+17= 35 Sufficient.
2) \(x=\sqrt{17^2}\)
We don't know the value of y. Not sufficient.
A is the answer
