[計量] The reflection of a postive integer ...
The reflection of a postive integer is obtained by reversing its digits.
For example, 321 is the reflection of 123. The difference between a
five-digit-integer and its reflection must be divisive
by which of the following?
a 3
b 4
c 5
d 7
e 9
A: e
請問各位，這題該怎麼算阿...
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推
10/21 10:32, , 1F
10/21 10:32, 1F
→
10/21 10:33, , 2F
10/21 10:33, 2F
→
10/21 10:34, , 3F
10/21 10:34, 3F
推
10/21 10:36, , 4F
10/21 10:36, 4F
→
10/21 10:36, , 5F
10/21 10:36, 5F
→
10/21 10:40, , 6F
10/21 10:40, 6F
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