如果我們在棋盤的第一個格子裡放一粒麥子，在第二個格子裡放兩粒麥子，在第三個格子裡放四粒麥子，以此類推，直到最後一個格子，那麼總共會有 18,446,744,073,709,551,615 粒麥子，足以堆成喜馬拉雅山的 100 倍高。

If we were to put a grain of wheat on the first box of a chessboard, two grains on the second one, four on the third one and so on, until the last one, there would be 18,446,744,073,709,551,615 grains, enough to make a mountain 100 times taller than the Himalayas.

Source: Tatoeba