Posted by **Dawn** on Monday, May 26, 2008 at 8:39pm.

Hi...i asked a question about 45 minuets ago, and i have been working at it still. I still havn't gotten an anwser! Could somebody please help me!

The question is, "this staircase has 3 steps (their are 6 blocks lined up as a staircase) How many blocks would you need for a 2-step staircase?

I already know that its 210 blocks..what i need is an expression/rule. PLEASE help!!

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