最終更新日：2025/11/23
To determine how many spheres were required to build a pyramid with five layers, she computed the corresponding pyramidal number.
正解を見る
To determine how many spheres were required to build a pyramid with five layers, she computed the corresponding pyramidal number.
音声機能が動作しない場合はこちらをご確認ください
編集履歴（0）
