I think i could get an 800 on the math section because of this one question i......

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Exactly!
Knowledge is Power.
I was saying it all along:
<a href=“http://talk.collegeconfidential.com/sat-preparation/547681-formulas-math-portion-sat.html#post1060845115[/url]”>http://talk.collegeconfidential.com/sat-preparation/547681-formulas-math-portion-sat.html#post1060845115&lt;/a&gt;
I didn’t list 15-20-25 triple there, but it’s a no-brainer: it follows 3-4-5, 6-8-10, …</p>