J***6
发帖数: 3 | 1 Using each of the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9 only once, form a nine
digit number A that can satisfy the following criteria:
- A is exactly divisible by 9.
- Removing the rightmost digit from A forms an eight digit number B that is
exactly divisible by 8.
- Removing the rightmost digit from B forms a seven digit number C that is
exactly divisible by 7.
- Removing the rightmost digit from C forms a six digit number D that is
exactly divisible by 6.
- Removing the rightmost digit from D form | b*****g
发帖数: 919 | 2 第一条。。。。
is
【在 J***6 的大作中提到】
: Using each of the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9 only once, form a nine
: digit number A that can satisfy the following criteria:
: - A is exactly divisible by 9.
: - Removing the rightmost digit from A forms an eight digit number B that is
: exactly divisible by 8.
: - Removing the rightmost digit from B forms a seven digit number C that is
: exactly divisible by 7.
: - Removing the rightmost digit from C forms a six digit number D that is
: exactly divisible by 6.
: - Removing the rightmost digit from D form
| o***n
发帖数: 921 | 3 381654729
is
【在 J***6 的大作中提到】
: Using each of the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9 only once, form a nine
: digit number A that can satisfy the following criteria:
: - A is exactly divisible by 9.
: - Removing the rightmost digit from A forms an eight digit number B that is
: exactly divisible by 8.
: - Removing the rightmost digit from B forms a seven digit number C that is
: exactly divisible by 7.
: - Removing the rightmost digit from C forms a six digit number D that is
: exactly divisible by 6.
: - Removing the rightmost digit from D form
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