Iam between 7,000,000 and 8,000,000. all my digits are odd. all the digits in my thousands period are the same. the sum of my digit is 31. what number am i? give as many answers as you can. what strategies did you use to find the mystrey number

The number can be many numbers like: 7,777,111  or 7,555,333  or 7,111,777

A: 7,777,111

We have four 7's and three 1's

B: 7,555,333

We have one 7, three 5's and three 3's.

These also can be 7,333,555 or 7,111,777.

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.

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