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Using any calculation in BEDMAS use the numbers 8645 = 9 Numbers can only be repeated once.

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    $\begingroup$ The title doesn't agree with the content. $\endgroup$
    – Bubbler
    Oct 22 '20 at 0:21
  • $\begingroup$ Don't edit over your old question, ask a new one instead. $\endgroup$
    – bobble
    Oct 22 '20 at 16:09
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We may have ambiguity here, but I will try to answer both cases. Please note there could be more answers, just that I will list one for each case.
8, 6, 4, 2:

8+(6-4)/2 = 8+2/2 = 8+1 = 9

8, 6, 4, 5:

6+5-8/4 = 6+5-2 = 11-2 = 9

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For the numbers 2,4,6,8 one solution is (6-2)/4+8=9

For the numbers 4,5,6,8 one solution is 8/(6-4)+5=9

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