Math Help Please

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Can you Please explain the answer that I received of 2469? It is the correct answer but I do not understand how to show the work. Thank you
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Using the 9 digits, 1, 2, 3, 4, 5, 6,7, 8 and 9 you can arrange four different digits to form a four-digit number that is NOT divisible by 7. The digits 1238 cannot be arranged to create a four-digit number that is divisible by 7. The digits 1389 also cannot be arranged to form a four-digit number that is divisible by 7. Find one additional set (not 1238 or 1389) of four different digits that is not divisible by 7. Provide the digits to form the smallest four digit value.

  • Math Help Please -

    sort of answered below - see links

  • math -

    write the 2-digit number that mathes the clues.my number has a tens digits that is 8 more than the ones digit.zero is not one of my digits.

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