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Is mn < 11? (1) m + n = 7 (2) 5 m 3 and 4 n 2

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Intern
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Joined: 18 Jun 2011
Posts: 49
Is mn < 11? (1) m + n = 7 (2) 5 m 3 and 4 n 2  [#permalink]

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New post 19 Jun 2011, 23:19
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A
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D
E

Difficulty:

  35% (medium)

Question Stats:

77% (00:57) correct 23% (00:57) wrong based on 35 sessions

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Is mn < 11?

(1) m + n = 7

(2) 5 ≥ m ≥ 3 and 4 ≥ n ≥ 2
Manager
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Joined: 30 Aug 2009
Posts: 224
Location: India
Concentration: General Management
Re: Arithmetic DS  [#permalink]

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New post 20 Jun 2011, 04:49
guygmat wrote:
Is mn < 11?

(1) m + n = 7

(2) 5 ≥ m ≥ 3 and 4 ≥ n ≥ 2


stmnt 1- m = 6 and n= 1 gives mn= 6 <11

m= 4 and n = 3 gives mn=12>11
Hence insuff

stmnt 2- m = 5 and n = 2 gives mn=10<11

m = 4 and n=3 gives mn=12>11. hence Insuff

Even together we can see that we do not get a single value for m and n. Hence even together the statements are insufficient.

Ans E
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Re: Is mn < 11? (1) m + n = 7 (2) 5 m 3 and 4 n 2  [#permalink]

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New post 16 Mar 2016, 07:43
1
Is mn < 11?

(1) m + n = 7
m=1 n=6 => mn=6<11
m=4 n=3 => mn=12>11
INSUFFICIENT

(2) 5 ≥ m ≥ 3 and 4 ≥ n ≥ 2
m=4 n=4 => mn=16>11
m=4 n=3 => mn=12>11
m=3 n=3 => mn=9<11.
INSUFFICIENT

COMBINING 1 AND 2
m=4 n=3 => mn=12>11
m=5 n=2 => mn=10<11. INSUFFICIENT => E
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Re: Is mn < 11? (1) m + n = 7 (2) 5 m 3 and 4 n 2  [#permalink]

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New post 23 Mar 2017, 15:15
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Re: Is mn < 11? (1) m + n = 7 (2) 5 m 3 and 4 n 2   [#permalink] 23 Mar 2017, 15:15
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