If x and y are odd integers, which of the following must always be a non-integer?
A. xy
B. x/y
C. y/x
D. xy/2
E. -xy
How will i figure out a non-integer?
OA D
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If x and y are odd integers
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Hi lheiannie07,
We're told that X and Y are ODD integers. We're asked which of the following will always be a NON-INTEGER. This question can be solved by TESTing VALUES.
IF... X=3 and Y=3
Answer A: 9
Answer B: 1
Answer C: 1
Answer D: 9/2
Answer E: -9
Final Answer: D
GMAT assassins aren't born, they're made,
Rich
We're told that X and Y are ODD integers. We're asked which of the following will always be a NON-INTEGER. This question can be solved by TESTing VALUES.
IF... X=3 and Y=3
Answer A: 9
Answer B: 1
Answer C: 1
Answer D: 9/2
Answer E: -9
Final Answer: D
GMAT assassins aren't born, they're made,
Rich
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EconomistGMATTutor
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Hello.
The key in this PS question is: "must always" be a non-integer.
a) xy, the product of two odd integers is integer. OUT.
b) x/y, if x=3 and y=1, then x/y is integer. So, it can be sometimes integer and sometimes not. OUT.
c) as above. OUT.
d) The product of to odd integers ALWAYS is an odd integer. So, xy/2 will be ALWAYS non-integer. CORRECT.
e) as option a). OUT.
I hope this answer can help you.
I'm available if you'd like a follow up.
Regards.
The key in this PS question is: "must always" be a non-integer.
a) xy, the product of two odd integers is integer. OUT.
b) x/y, if x=3 and y=1, then x/y is integer. So, it can be sometimes integer and sometimes not. OUT.
c) as above. OUT.
d) The product of to odd integers ALWAYS is an odd integer. So, xy/2 will be ALWAYS non-integer. CORRECT.
e) as option a). OUT.
I hope this answer can help you.
I'm available if you'd like a follow up.
Regards.
GMAT Prep From The Economist
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BTGmoderatorDC
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Thanks a lot!EconomistGMATTutor wrote:Hello.
The key in this PS question is: "must always" be a non-integer.
a) xy, the product of two odd integers is integer. OUT.
b) x/y, if x=3 and y=1, then x/y is integer. So, it can be sometimes integer and sometimes not. OUT.
c) as above. OUT.
d) The product of to odd integers ALWAYS is an odd integer. So, xy/2 will be ALWAYS non-integer. CORRECT.
e) as option a). OUT.
I hope this answer can help you.
I'm available if you'd like a follow up.
Regards.
-
BTGmoderatorDC
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- Joined: Thu Sep 07, 2017 4:43 pm
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Thanks a lot![email protected] wrote:Hi lheiannie07,
We're told that X and Y are ODD integers. We're asked which of the following will always be a NON-INTEGER. This question can be solved by TESTing VALUES.
IF... X=3 and Y=3
Answer A: 9
Answer B: 1
Answer C: 1
Answer D: 9/2
Answer E: -9
Final Answer: D
GMAT assassins aren't born, they're made,
Rich
