3,6,9 3+3=6 6+6=12 1+2=3 All other numbers equal 9. 1+2+3+… Twetch · February 23, 2021 3,6,93+3=66+6=12 1+2=3All other numbers equal 9.1+2+3+4+5+6+7+8=36 3+6=9