72 / 利率(%) = 投資金額加倍所需年數
範例: 每年投資報酬率 10%, 投資金額加倍需要幾天呢?
72 / 10 = 7.2 (年)
Showing posts with label 理財. Show all posts
Showing posts with label 理財. Show all posts
Thursday, April 12, 2007
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