Hi. Thanks. Maybe I don't understand the question.
I take it one replaces all of the + - * / that are listed with different
permutations.

{"2+2-1", "10*2/1", "6+2*2", "3-2/2"},
{"2+2-1", "10/2*1", "6+2/2", "3-2*2"},
{"2+2*1", "10-2/1", "6+2-2", "3*2/2"},
{"2+2*1", "10/2-1", "6+2/2", "3*2-2"}...
....etc

I didn't show any that were all equal numerically.
Even if duplicates were allowed, I didn't get an answer.
I'll try some more ideas.
Thanks. :)



Spiky wrote:
On Jan 2, 9:13 am, Dana DeLouis wrote:
Hi. I pulled up all "permutations" of "+-*/" and even "+-*/^" and did
not show a solution. Are you sure you copied the problem correctly?
- - -
Dana DeLouis

Are you sure, Dana? Left to right, then top to bottom: +/*-
=4