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Of the numbers r+s, r-s, r x s, and r/s, which is greatest?

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Intern
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B
Joined: 08 Feb 2015
Posts: 3
Of the numbers r+s, r-s, r x s, and r/s, which is greatest?  [#permalink]

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New post 15 Nov 2016, 13:47
3
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

80% (00:42) correct 20% (00:53) wrong based on 162 sessions

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Of the numbers r+s, r-s, r x s, and r/s, which is greatest?

1) r=s=1

2)r-s is the least of the numbers
Director
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V
Status: Preparing for GMAT
Joined: 25 Nov 2015
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Re: Of the numbers r+s, r-s, r x s, and r/s, which is greatest?  [#permalink]

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New post 16 Nov 2016, 03:08
3
S1 - r=s=1, therefore r+s=2; r-s=0; r x s=1; r/s = 1
hence greatest is r+s.

S2 - r-s is the least.
When r=s=1, r+s is greatest.
Suppose, when r=3,s=2
r+s=5; r-s=1; r x s=6; r/s = 3/2 which gives r x s as the greatest.
Since we get two different values, so B not sufficient.

Hence answer is A.

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Manager
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Concentration: General Management, Strategy
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Re: Of the numbers r+s, r-s, r x s, and r/s, which is greatest?  [#permalink]

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New post 28 Jul 2018, 09:49
1
the best way to solve the problem will be to assume numbers and A fits nicely
Re: Of the numbers r+s, r-s, r x s, and r/s, which is greatest? &nbs [#permalink] 28 Jul 2018, 09:49
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Of the numbers r+s, r-s, r x s, and r/s, which is greatest?

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