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明明和丁丁是一对好朋友。一天,放学以后两人又凑到了一起。明明说:“不论是谁,不管他手里拿着多少东西,我都能猜到他哪只手拿的是单数,哪只手拿的是双数。”丁丁两手都握着硬币问:“我哪只手拿的是单数,哪只手拿的是双数?”“请先将你左手握的硬币数扩大3倍。”明明说:“再将右手握的硬币数扩大2倍,最后将和是单数还是双数告诉我!”丁丁默默地算了一下,得49,就说:“单数!”明明又说:“现在换过来,先将左手握的硬币数扩大2倍,再将
Obviously and Tintin is a pair of good friends. One day after school, the two got together again. Clearly: ”No matter who, no matter how much things are in his hand, I can guess which hand holds the singular number and which one holds the double number.“ ”Tintin holds the coin in both hands : “My hand is a single number, which hand is a double number? ” “Please first your hand to increase the number of coins to 3 times.” “Clearly said: ” and then the right hand grip The number of coins to expand 2 times, the final and will be the singular or double number tell me! “Tintin silently forget, get 49, said:” singular! “Say clearly: ” Now change over, The number of coins held by the left hand is enlarged by 2 times, and then