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07 Mar 2016, 11:08
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C
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Difficulty:
45%
(medium)
Question Stats:
60% (01:20) correct
40%
(01:14)
wrong
based on 331
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x and y are consecutive integers such that x > y. What is the absolute value of y?
(1) The product xy is 20.
(2) x is a prime number.
(1) The product xy is 20.
(2) x is a prime number.
Editing my solution:
St1: xy = 20 --> We get only one consecutive pair 4 and 5. Since x > y, x = 5 and y = 4 or x = -4 and y =-5. We have two values for the absolute value of y. --> Not Sufficient
St2: x is prime --> x = 2, y = 1 or x = 3, y = 2 --> Not sufficient
Combining St1 and St2,
x is prime. So, x = 5 and y = 4.
Answer: C
St1: xy = 20 --> We get only one consecutive pair 4 and 5. Since x > y, x = 5 and y = 4 or x = -4 and y =-5. We have two values for the absolute value of y. --> Not Sufficient
St2: x is prime --> x = 2, y = 1 or x = 3, y = 2 --> Not sufficient
Combining St1 and St2,
x is prime. So, x = 5 and y = 4.
Answer: C
08 Mar 2016, 13:07
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Vyshak
I think x and y can be -4 and -5 and x can be -4 which is greater than -5 ---> not sufficient
When you combine both scenarios, absolute value of y will be 4.
Answer: C
