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Updated on: 09 Jul 2019, 04:09
Originally posted by Bunuel on 31 May 2017, 01:40.
Last edited by Sajjad1994 on 09 Jul 2019, 04:09, edited 1 time in total.
Last edited by Sajjad1994 on 09 Jul 2019, 04:09, edited 1 time in total.
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
97% (01:07) correct
3%
(00:54)
wrong
based on 66
sessions
History
Date
Time
Result
Not Attempted Yet
\((2 + x)(2 + y) – (2 + x) – (2 + y) =\)
(A) 2y
(B) xy
(C) x + y
(D) x – y
(E) x + y + xy
(A) 2y
(B) xy
(C) x + y
(D) x – y
(E) x + y + xy
Source: Nova GMAT
Difficulty Level: 500
Difficulty Level: 500
31 May 2017, 04:14
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(2+x)(2+y) = 4 + 2x + 2y + xy
Thus, (2+x)(2+y)–(2+x)–(2+y) = 4 + 2x + 2y + xy - 2 -x -2 - y = (x + y + xy)
Hence E answer
Thus, (2+x)(2+y)–(2+x)–(2+y) = 4 + 2x + 2y + xy - 2 -x -2 - y = (x + y + xy)
Hence E answer
31 May 2017, 07:21
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We need to find out the value of this expression
(2+x)(2+y)–(2+x)–(2+y)
Substituting values x=y=1
We get 9 - 3 - 3 = 3
Of the available answer options, only Option E gives us the same value as the expression.
(2+x)(2+y)–(2+x)–(2+y)
Substituting values x=y=1
We get 9 - 3 - 3 = 3
Of the available answer options, only Option E gives us the same value as the expression.
