x and y are consecutive integers such that x y. What is the absolute

Question

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.

Kurtosis · Answer

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

mosurok · Answer

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

Kurtosis · Answer

Kudos for pointing the error. I have edited my solution.

TeamGMATIFY · Answer

NOTE: Negative numbers are not prime since they would have more than 2 factors.
Eg: - 3 will have 4 factors: -3, -1, 1, 3

Absolute value of y means |y| or simply the positive value of the number

Statement 1 : xy = 20
Case 1: x = 5 and y = 4
Case 2: x = -4 and y = -5

INSUFFICIENT

Statement 2 : x is a prime number
Clearly insufficient as nothing is known about y

INSUFFICIENT

Combining Statement 1 and Statement 2 :
xy = 20 and x is prime
Hence y has to 4

SUFFICIENT

Option C

spetznaz · Answer

We need to find the absolute value of y. 
St 1 - NS (What if the numbers are negative !)
St 2 - NS (x could be 3 or 2 !)

Both -> Sufficient

Option C it is !

surfingpirate · Answer

I got this wrong because for some reason I assumed consecutive numbers have to follow the number line direction originating from 0. So > 0 then 1, 2, 3 and so and and < 0 -1, -2, -3 and so on.

bumpbot · Answer

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x and y are consecutive integers such that x > y. What is the absolute

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