If 817 = 7 909 = 9 453 = 3 Then what is 1246 = ?

The ans is 4. The logic is ; The digits are added and reduced to single digit.

Ans=4, add digit until single digit come

If 817 = 7, 909 = 9, 453 = 3 then what is 1246 = ? 1246 = 6 xD or 1246 = 46 xD

Depending on how you count this.

If 3+5=6, 2+7=5, 3+9=9 then what does 2+6=?