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What is the value of positive number a?

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Bunuel
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What is the value of positive number a? [#permalink] New post   08 Dec 2016, 13:58
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What is the value of positive number a?

(1) 2a = a^2
(2) a + 2 = 2a
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D
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rohit8865
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Re: What is the value of positive number a? [#permalink] New post   08 Dec 2016, 20:11
Bunuel wrote:
What is the value of positive number a?

(1) 2a = a^2
(2) a + 2 = 2a



since a is positive number a>0
we can cancel a in both cases

(1) 2a=a^2

a=2...suff

(2) a + 2 = 2a
a=2----suff

Ans D
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Re: What is the value of positive number a? [#permalink] New post   21 Sep 2017, 19:35
Since a is positive, from statement 1 value is 2.
We discard the value 0 for a.
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What is the value of positive number a? [#permalink] New post   25 Sep 2017, 00:40
Bunuel wrote:
What is the value of positive number a?

(1) 2a = a^2
(2) a + 2 = 2a


Since 0 is considered as neither negative nor positive shouldn't we also consider a=0?
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Bunuel
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Re: What is the value of positive number a? [#permalink] New post   25 Sep 2017, 00:42
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Jagwant01 wrote:
Bunuel wrote:
What is the value of positive number a?

(1) 2a = a^2
(2) a + 2 = 2a


Since 0 is considered as neither negative nor positive shouldn't we also consider a=0?


Notice that the stem says that a is a positive number: What is the value of positive number a?
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Re: What is the value of positive number a? [#permalink]
25 Sep 2017, 00:42
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Bunuel
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