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the min value of XY will be -25 when X=25 and Y = -1 and which is greater than -50.LMK27 wrote:If x and y are integers, and -2 < x < 25 and -2 < y <12, what is the range of possible values for xy?
a) 4 < xy < 300
b) -2 < xy < 300
c) -50 < xy < 300
d) -50 < xy < 300
e) -50 < xy < 300
e
[spoiler][/spoiler]
Since x and y are integers, the max value is indeed 25*11 = 275. Further, the min value is -1*25 = -25.LMK27 wrote:If x and y are integers, and -2 < x < 25 and -2 < y <12, what is the range of possible values for xy?
a) 4 < xy < 300
b) -2 < xy < 300
c) -50 < xy < 300
d) -50 < xy < 300
e) -50 < xy < 300
Stuart Kovinsky wrote:Since x and y are integers, the max value is indeed 25*11 = 275. Further, the min value is -1*25 = -25.LMK27 wrote:If x and y are integers, and -2 < x < 25 and -2 < y <12, what is the range of possible values for xy?
a) 4 < xy < 300
b) -2 < xy < 300
c) -50 < xy < 300
d) -50 < xy < 300
e) -50 < xy < 300
So, either the question is improperly constructed of there's a typo or two in the post. As written, C and D are just as valid as E.
The only way E is the correct answer is if x and y don't have to be integers.
But E says that one of the possible values of XY is -49, which is also wrong; so, by the same reasoning, you should eliminate E.harshavardhanc wrote:
Stuart,
But C and D say that one of the possible values of XY can be -50, which I think is incorrect. Hence, IMO C and D do not show the range correctly.
Please correct me if I'm wrong.
Stuart,Stuart Kovinsky wrote:But E says that one of the possible values of XY is -49, which is also wrong; so, by the same reasoning, you should eliminate E.harshavardhanc wrote:
Stuart,
But C and D say that one of the possible values of XY can be -50, which I think is incorrect. Hence, IMO C and D do not show the range correctly.
Please correct me if I'm wrong.
So, either the question is:
"which of the following ranges includes all of the possible values of xy", in which case C, D and E are all correct; or
"which of the following is equivalent to all possible values of xy", in which case there's no correct answer.
OK.. let's change the wording of C to better explain my point.harshavardhanc wrote: Stuart,
Please help me understand this one.
E never says that XY can have a value of -49. It just says that the value of XY lies between -50 and 300 (both excluded), as there are only less than (<) signs in the option.
However, C and D explicitly say that XY lies between -50 and 300 and one of the possible value is -50, as there is less than or equal to sign in the option (<).
Am I wrong in my interpretation? Please help!
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