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#29363

🙂 Sorry Ken. I got carried away by permutations and combinations. 🙂

I am glad I signed up for this course – this course is helping challenge my thought process. 🙂

Here are those 5:

202(1)

3(99)9

3(981)

1(8)02(1)

1(799)9

Are these same 5 you had in mind? Or are there other combinations?

I validated these with the digit sum. Is there a way to know how many combinations possible by looking at the number?

Regards.

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