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# is integer P positive? (1) sqrt P = P^2 (2) =1

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is integer P positive? (1) sqrt P = P^2 (2) =1 [#permalink]

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09 Jan 2004, 12:43
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is integer P positive?

(1) sqrt P = P^2
(2) [P]=1
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shubhangi

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09 Jan 2004, 12:47
C)
from 1: 0 or 1 but 0 is not positive
from 2: -1 or 1
both are sufficient
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Paul

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09 Jan 2004, 12:47
from (1) we know that the answer is one or zero.
from (2) we know that the answer is one or negative one.

Both together are sufficient.

I assume when you type [1], you mean |1|...
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09 Jan 2004, 12:49

Paul, level 3 CFA candidate
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Paul

[#permalink] 09 Jan 2004, 12:49
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# is integer P positive? (1) sqrt P = P^2 (2) =1

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