If 123x45 = 1, 22+222=0, 8979:4=5, 56319=2 what is 781-32=?

Question

If 123x45 = 1, 22+222=0, 8979:4=5, 56319=2 what could be the solution to 781-32=?

Found it on an maths board and became desperate over time.

score 3 · Answer 1 · answered Oct 01 '23 at 12:45

3

I think that

781-32 = 2

Because

In every equation, we count the number of enclosed regions on the left-hand side to get the answer on the right side. 0,4,6 and 9 each have one enclosed region and 8 has two.

answered Oct 01 '23 at 12:45

hexomino

135,910
10
384
563

Oh, wow, and I've been to every realm of math to solve it. Thanks! Is this a popular pattern in puzzles? – Guestos Oct 01 '23 at 13:29
@Guestos Yep! Here's a similar puzzle posted in 2014, nine years ago... – Stiv Oct 01 '23 at 14:37
What do you mean by "enclosed region?" (thanks!) – MWQOJYNWQA Oct 18 '23 at 17:53

If 123x45 = 1, 22+222=0, 8979:4=5, 56319=2 what is 781-32=?

1 Answers1