作者flara (冰火五重天)
看板GRE_Verbal
标题Re: [请益]计量一题
时间Sat May 5 13:24:56 2007
※ 引述《gisanchun (阿G魔人现身...)》之铭言:
: Carol’s age, in years, can be expressed by reversing the digits in her
: father's age, in years. The sum of the digits in each age is 10.
: (a) The positive difference between Carol’s age, in years, and her father’s age, in years
: (b) 36
: ans:(b)
: 我实在不懂...麻烦好心人解惑~thx~
意思是如果Carol的年龄是 15岁,他老爸就是51岁。
题目告诉你十位数+个位数=10,所以可能的组合从(19,91),(28,82)...(46,64)。
可能的年龄差则是91-19=72,82-28=54,73-37=36,64-46=18。
你确定答案是B吗? 从以上分析看来应该是无法分辨
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1F:推 gisanchun:SORRY...答案是A, 可是我的想法跟你一样 123.240.204.20 05/06 08:39
2F:→ gisanchun:还是谢谢你罗^^ 123.240.204.20 05/06 08:39