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There are 16 blocks in a staircase of five steps.Though my friend thinks it's 18.On the bottom platform on mine there are 6 blocks but on my friends there are 7 blocks.I was wondering if blocks are allowed to go on spaces because if not both of our theory's are incorrect.Three of my platforms are on top of spaces but my friend's has two platforms on top of spaces.Are both of our theory's right?Are both of our theory's wrong?Or is one right and one wrong?We don't know but we hope you do.We hope in some way you can return to us.