A bit of a speed question this, first correct answer gets the check. Although you are allowed to use computers, it might be quicker not to. By placing only $+$ signs between some of the numbers on the left hand side, make this expression true:

$1\;\;2\;\;3\;\;4\;\;5\;\;6\;\;7\;\;8\;\;9 = 855$

For example if we had $1\;\;2\;\;3\;\;4 = 19$, the answer is $12+3+4=19$

up vote 4 down vote accepted

It is

$1 + 2 +3 + 54 + 6 + 789 = 855$


Edit

Nevermind, it is

$12 + 3 + 45 + 6 + 789 = 855$

and it could also be

$123 + 45 + 678 + 9 = 855$

  • no because you've got 54 not 45 – JonMark Perry Sep 11 at 8:22
  • @JonMarkPerry oh nevermind, thought I could do that :D – Ian Fako Sep 11 at 8:23
  • @JonMarkPerry updated solution – Ian Fako Sep 11 at 8:26
  • correct but not the one I've got – JonMark Perry Sep 11 at 8:27
  • @JonMarkPerry another solution added :D – Ian Fako Sep 11 at 8:29

It can be-

$1+2+3+4+56+789=855$

  • correct but not the one I've got – JonMark Perry Sep 11 at 8:27
  • 2
    it seems there can be multiple acceptable solution within given constraints. – Shahriar Mahmud Sajid Sep 11 at 8:31
  • That's what I got too :) – AHKieran Sep 11 at 10:37

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