英语翻译Each of the following numbers has two digits blotted out.Which of numbers could be the number of hours in X days,where X is an integer?(A)25( ),( )06 (B)50( ),( )26 (C)56( ),( )02 (D)62( ),( )50 (E)65( ),( )20求题目翻译,以及解题
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![英语翻译Each of the following numbers has two digits blotted out.Which of numbers could be the number of hours in X days,where X is an integer?(A)25( ),( )06 (B)50( ),( )26 (C)56( ),( )02 (D)62( ),( )50 (E)65( ),( )20求题目翻译,以及解题](/uploads/image/z/7101796-4-6.jpg?t=%E8%8B%B1%E8%AF%AD%E7%BF%BB%E8%AF%91Each+of+the+following+numbers+has+two+digits+blotted+out.Which+of+numbers+could+be+the+number+of+hours+in+X+days%2Cwhere+X+is+an+integer%3F%28A%2925%28+%29%2C%28+%2906+%28B%2950%28+%29%2C%28+%2926+%28C%2956%28+%29%2C%28+%2902+%28D%2962%28+%29%2C%28+%2950+%28E%2965%28+%29%2C%28+%2920%E6%B1%82%E9%A2%98%E7%9B%AE%E7%BF%BB%E8%AF%91%2C%E4%BB%A5%E5%8F%8A%E8%A7%A3%E9%A2%98)
英语翻译Each of the following numbers has two digits blotted out.Which of numbers could be the number of hours in X days,where X is an integer?(A)25( ),( )06 (B)50( ),( )26 (C)56( ),( )02 (D)62( ),( )50 (E)65( ),( )20求题目翻译,以及解题
英语翻译
Each of the following numbers has two digits blotted out.Which of numbers could be the number of hours in X days,where X is an integer?
(A)25( ),( )06 (B)50( ),( )26 (C)56( ),( )02 (D)62( ),( )50 (E)65( ),( )20
求题目翻译,以及解题思路
英语翻译Each of the following numbers has two digits blotted out.Which of numbers could be the number of hours in X days,where X is an integer?(A)25( ),( )06 (B)50( ),( )26 (C)56( ),( )02 (D)62( ),( )50 (E)65( ),( )20求题目翻译,以及解题
答案选E
翻译:下列数字中,每个数有两位被划掉了.以下哪些数能表示在X天里的小时的数量(X是整数)?
一天是24小时,这个数字一定是:24*X
能被24整除的数,末尾两位一定能被4整除.
观察选项,只有E项符合!
Each of the following numbers has two digits blotted out. Which of numbers could be the number of hours in X days, where X is an integer?
下列各数有两个数字抹掉。这些数字可以在X天的小时数,其中x是一个整数?
就是这些数 25xx ...
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Each of the following numbers has two digits blotted out. Which of numbers could be the number of hours in X days, where X is an integer?
下列各数有两个数字抹掉。这些数字可以在X天的小时数,其中x是一个整数?
就是这些数 25xx 和 xx06 是n天的小时数。
1天就是24
2天就是48
n天就是:25xx ,或者 xx06
比如:2500/24=104.16 所以可以是:2520/24=105天
所以 25xx,这种数字 可以先不看
先看 xx06 ,去排除。 不管是1006 还是 2806,/24都不可能得整数。所以排除。
你觉得哪个可以除尽24呢?
xx26 xx02 xx50 xx20 ?
肯定不是xx02
肯定不是xx26
xx50和xx20蒙一个
比如:我蒙20
24可以被4整除,20也可以被4整除。
你明白吗?这个好像数学老师讲过。
选65( ),( )20
因为只有20可以被4整除
Ø 能被4整除的数,后两位一定能被4整除
Ø 24*X然后再看后结果两位数,太麻烦
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