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闲时翻看杂志,读到一道智力题:荷塘里有一片荷叶,它每天都会增长一倍。假使30天会长满整个荷塘,请问第28天,荷塘里有多少片荷叶?从后往前推,答案令人吃惊:只有四分之一荷塘的荷叶。这时,如果站在荷塘的对岸,会发现荷叶是那样少,似乎只有那么一点点,但是,到了第29天就会占满一半,第30天就会长满整个荷塘。在荷叶长满荷塘的过程中,荷叶每天的生长速度都一样,可前四分之一却花去了漫长
Look at the magazine free time, read an intellectual question: Lotus pond has a lotus leaf, it will double daily. If the 30-day meeting will be filled with the entire lotus pond, what is the number of lotus leaves in the lotus pond on the 28th day? From the back, the answer is astonishing: there is only one-quarter lotus leaf in the lotus pond. At this time, if you stand on the other side of the lotus pond, you will find that the lotus leaf is so small that it seems only a little bit smaller. However, by the 29th day, it will be half full and the lotus pond will be covered by the 30th day. Lotus leaf lotus lotus in the process, the growth rate of lotus leaf every day are the same, but the first quarter spent a long