2001-09-01から1ヶ月間の記事一覧
You are given twelve balls. All are the same size and weight, except one which is heavier or lighter than the others. Using a balance scale, can you determine the odd ball in three weighings?
You are given twelve balls. All are the same size and weight, except one which is heavier or lighter than the others. Using a balance scale, can you determine the odd ball in three weighings?