3
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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 $12+3+4=19$

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4
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It is

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


Edit

Nevermind, it is

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

and it could also be

$123 + 45 + 678 + 9 = 855$

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  • $\begingroup$ no because you've got 54 not 45 $\endgroup$ – JMP Sep 11 '18 at 8:22
  • $\begingroup$ @JonMarkPerry oh nevermind, thought I could do that :D $\endgroup$ – Ian Fako Sep 11 '18 at 8:23
  • $\begingroup$ @JonMarkPerry updated solution $\endgroup$ – Ian Fako Sep 11 '18 at 8:26
  • $\begingroup$ correct but not the one I've got $\endgroup$ – JMP Sep 11 '18 at 8:27
  • $\begingroup$ @JonMarkPerry another solution added :D $\endgroup$ – Ian Fako Sep 11 '18 at 8:29
5
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It can be-

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

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  • $\begingroup$ correct but not the one I've got $\endgroup$ – JMP Sep 11 '18 at 8:27
  • 2
    $\begingroup$ it seems there can be multiple acceptable solution within given constraints. $\endgroup$ – Shahriar Mahmud Sajid Sep 11 '18 at 8:31
  • $\begingroup$ That's what I got too :) $\endgroup$ – AHKieran Sep 11 '18 at 10:37

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