The largest number

Find the largest integer such that:

1. No figures are not repeated,
2. multiplication of every two digits is odd,
3. In addition, all digits are odd.

Correct answer:

x =  9753

Step-by-step explanation:

x=9753  M = 9876543210 9 7 = 63 7 5 = 35 5 3 = 15  9+7+5+3 = 24



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