Question

Số?

Answer 1

`3+5=8`

`8-3=5`

`8-5=3`

`4+2=6`

`6-4=2`

`6-2=4`

`8+2=10`

`10-2=8`

`10-8=2`

`4+3=7`

`3+4=7`

`7-4=3`

`7+1=8`

`1+7=8`

`8-1=7`

`5+0=5`

`5-0=5`

`5-5=0`

Answer 2