If 7351 = 5; 439 = 8; 12456 = 0 Then 2462 = ??

Question

If
5 + 4 => 9
3 + 5 => 9
9 + 1 => 9
1 + 6 => 8
4 + 2 => 8
1 + 7 => 7
5 + 6 => 6
3 + 7 => 3
7 + 0 => 0
Then
8 – 1 => ??

Answer 1

6

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7351 = 7*3*5*1 = 105 = ..5
439=4*3*9 = ..8;
12456 =1*2*3*4*5*6=..0
2*4*6*2 = ..6