兒子今天的數學作業
(2008-10-06 16:48:25)
下一個
兒子今天的家庭作業,第八題:Write a place-value number riddle.
於是他就草就了如下這麽個數謎:
My thousands digit is more than 3 and also a multiple of 4. My hundreds digit is 2 more than my thousands digit. My tens digit is the hundreds digit times two, then minus 3. My ones digit is a multiple of 3 and is divisible by 2. The number in my tenths place is 1111/2222 turned into a part of a number. The number in my hundredths is not 1 or 7, and isn’t any number divisible by 3. It is not 2 or 8 either. The thousandths digit is 5 more than my hundredths digit.
What number am I?
兒子對我說:一個月以後再給答案。
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