1234 is to 46 and 3925 is to 514. Therefore, 1864 is to:

1234 is to 46 and 3925 is to 514. Therefore, 1864 is to:

Explanation

1864

1 + 6 = 7

8 + 4 + 12

TotalĀ  = 712

This question is wrong as I think. let see how to solve it! 1234 4 and 1+2+3 46 3925 5 and 2+9+3 514 and last one according to this rule 1864 4 and 1+6+8 415