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c) Let a, b, c, d, e, f, g, h, i {0,1,2,3,4,5,6,7,8,9}. If each of the 3-digit numbers abc, def, and ghi is divisible by 7 then the determinant below is divisible by 7.
c) Let a, b, c, d, e, f, g, h, i {0,1,2,3,4,5,6,7,8,9}. If each of the 3-digit numbers abc, def, and ghi is divisible by 7 then the determinant below is divisible by 7.
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