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# Is s = r?

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Re: Is s = r? [#permalink]
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Bunuel wrote:
Is s = r?

(1)$$s^2 = r^2$$
(2) s is positive

(1)$$s^2 = r^2$$;So | s |=| r |,here s and r could be positive or negative, so their value could not be equal,Not Sufficient

(2) s is positive ;no information about r,Not Sufficient

(1)+(2) Still value of r could be positive or negative , Not Sufficient

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Bunuel wrote:
Is s = r?

(1) s^2 = r^2
(2) s is positive

1) $$(-1)^2=1^2 && 1^2=1^2$$ => NOT SUFFICIENT
2) No info about r => NOT SUFFICIENT
1) & 2) $$1^2=1^2 && 1^2=(-1)^2$$=> NOT SUFFICIENT

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Re: Is s = r? [#permalink]
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Re: Is s = r? [#permalink]
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