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# Each of the following equals w(x + y + z) EXCEPT

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Math Expert
Joined: 02 Sep 2009
Posts: 52231
Each of the following equals w(x + y + z) EXCEPT  [#permalink]

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09 Feb 2018, 07:07
00:00

Difficulty:

5% (low)

Question Stats:

97% (00:26) correct 3% (00:14) wrong based on 48 sessions

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Each of the following equals w(x + y + z) EXCEPT

(A) wx + wy + wz

(B) (x + y + z)w

(C) wx + w(y + z)

(D) 3w + x + y + z

(E) w(x + y) + wz

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Re: Each of the following equals w(x + y + z) EXCEPT  [#permalink]

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09 Feb 2018, 09:18
Bunuel wrote:
Each of the following equals w(x + y + z) EXCEPT

(A) wx + wy + wz

(B) (x + y + z)w

(C) wx + w(y + z)

(D) 3w + x + y + z

(E) w(x + y) + wz

Simply expanding all the options will give us a clear indication of the answer.
Options A,B,C, and E all expand to give the expression wx + wy + wz.

Only Option D(3w + x + y + z) is not a valid expansion and is our answer.
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Re: Each of the following equals w(x + y + z) EXCEPT  [#permalink]

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09 Feb 2018, 12:32
All the options when solved gives us wx+wy+wz except for the option D.

The Option D has 3W+x+y+z is the only outlier.

Ans: D
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Posts: 214
Re: Each of the following equals w(x + y + z) EXCEPT  [#permalink]

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10 Feb 2018, 02:01
Bunuel wrote:
Each of the following equals w(x + y + z) EXCEPT

(A) wx + wy + wz

(B) (x + y + z)w

(C) wx + w(y + z)

(D) 3w + x + y + z

(E) w(x + y) + wz

i think it must be D as when we make it more concise it will became 4w+y+z which is not equal to above equation.
Re: Each of the following equals w(x + y + z) EXCEPT &nbs [#permalink] 10 Feb 2018, 02:01
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