こちらは海外のネットで流行っているシンプルな計算問題。なぜこの答えになるのか、頭を悩ませる人が続出しているのだとか。わかるでしょうか？ Only people good at math will get this one.... and its actually funny. : RedditA maths meme that is actually funny rather than stupid:Solve carefully!230 - 220 x 0.5 =You probably won’t believe it but the answer is 5!#maths— KJ Cheetham ❄️