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Re: If s and t are two different numbers on the number line, is [#permalink]
28 Sep 2013, 11:55

Question is s+t = 0, s= -t?

S and t are different numbers

(1) |s| = |t| If S and T have to be different numbers then yes.

S = -t or -t=S, I think both should be equivalent (just multiply each side by 1), Hence s= -t, Suff

(2) Says that 0 is between s and t, so they have different signs, but we don't know anything about their values. Hence Insuff

Answer is (A) Hope it helps.

By the way, the first time I did this problem I made the mistake in statement 2 of writing that 0 was the average between S and T, but the question stem does not say that 0 is exactly between them, so just to let you know.

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