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A brain teaser

How can we construct 1 by using numbers from 0 to 9 exactly once and not using 0 as index ?

Note by Tanuj Sur
3 years, 9 months ago

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I just found a solution by a little bit of trial and error : \((-9+8+7-6+5-3+2)/4 + 0/1\) Yash Talekar · 3 years, 9 months ago

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Questions: What is "index"? What are the allowed operations/functions? Are we allowed to use brackets? Are we allowed to rearrange the numbers (seems so)? Are we allowed to concatenate numbers? Ivan Koswara · 3 years, 9 months ago

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@Ivan Koswara That's not given in the question!!! Tanuj Sur · 3 years, 9 months ago

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