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If (x5)(y+2) = 0 which of the following must be true?
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Updated on: 31 Jan 2013, 06:50
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65% (00:46) correct 35% (01:01) wrong based on 318 sessions
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If (x5)(y+2) = 0 which of the following must be true? (A) x = y (B) x > y (C) x < y (D) xy = 10 (E) None of the above
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Originally posted by sananoor on 31 Jan 2013, 06:41.
Last edited by Bunuel on 31 Jan 2013, 06:50, edited 1 time in total.
Renamed the topic and edited the question.



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Re: Please help me to solve this question
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31 Jan 2013, 06:55
sananoor wrote: if (x5)(y+2)=0 which of the following must be true?
(A)X=Y (b) X>Y (C)X<Y (d)XY=10 e.none of th above If (x5)(y+2) = 0 which of the following must be true?(A) x = y (B) x > y (C) x < y (D) xy = 10 (E) None of the above From (x5)(y+2) = 0 it follows that either x=5 or y=2. (A) x = y > not necessarily true. Consider x=5 and y=0. (B) x > y > not necessarily true. Consider x=5 and y=10. (C) x < y > not necessarily true. Consider x=5 and y=0. (D) xy = 10 > not necessarily true. Consider x=5 and y=0. Thus, none of the statements must be true. Answer: E. Hope it's clear. P.S. Please read carefully and follow: rulesforpostingpleasereadthisbeforeposting133935.html Pay attention to the rule #3 (the name of a topic MUST be the first 40 characters (~the first two sentences) of the question).
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Senior Manager
Joined: 23 Jun 2012
Posts: 381
Location: Pakistan
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GPA: 3.76

Re: If (x5)(y+2) = 0 which of the following must be true?
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31 Jan 2013, 08:10
i didnt get this how u consider X and Y values when it is given in the question If (x5)(y+2) this means that X = 5 and Y = 2 thus XY = 10 and X > Y..
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Re: If (x5)(y+2) = 0 which of the following must be true?
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31 Jan 2013, 08:20



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Re: If (x5)(y+2) = 0 which of the following must be true?
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31 Jan 2013, 16:08
Bunuel wrote: sananoor wrote: i didnt get this how u consider X and Y values when it is given in the question If (x5)(y+2) this means that X = 5 and Y = 2 thus XY = 10 and X > Y.. (x5)(y+2) = 0 means that EITHER x=5 OR y=2. For example, if x=5, then y can be any number. The same way, if y=2, then x can be any number. Bunuel, although your solution is perfect, I would just point out a rewording suggestion on your last comment. (x5)(y+2) =0 means that x = 5 OR y =2 (without the EITHER). Obviously both equalities COULD happen simultaneously, but they don't HAVE TO happen simultaneously in order for the equation in stem to be valid



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Re: If (x5)(y+2) = 0 which of the following must be true?
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02 Jun 2015, 07:01
If (x5)(y+2) = 0 which of the following must be true? (A) x = y Only one of x = y = 5 or x = y =  2, or x can be 100 (or any other value, for example and y= 2, making this equation hold true (B) x > y If x = 5 and y = 2 this is true, but x can be 75 (any value) and y = 2 (C) x < y The same is true for this inequality. If x = 5 y can be any value larger or smaller, or if y = 2 then x can be any value larger or smaller. (D) xy = 10 This is true when x = 5 and y = 2 but they need not be. (E) None of the above



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Re: If (x5)(y+2) = 0 which of the following must be true?
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04 Jun 2015, 10:35
The ques is really good in wording in the sense that it asks "MUST BE TRUE" Had the question been "could be true" then x=5 and y2 could lead to x>y



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Re: If (x5)(y+2) = 0 which of the following must be true?
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20 Dec 2018, 03:19
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Re: If (x5)(y+2) = 0 which of the following must be true? &nbs
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20 Dec 2018, 03:19






