Correct Answer - Option 3 : 1623
Explanation:
If we try adding the numbers directly (i.e. considering decimal)
Since 7+ 6 =13 and the given answer 435 has 5 in the one’s place, therefore, the numbers are in base 8;
because 13 will correspond to 15 (7 + 8) in the base 8 system.
Now converting 731 and 672 in decimal
(7 × 8^2) + (3 × 8^1) + (1 × 8^0) = 473
(6 × 8^2) + (7 × 8^1) + (2 × 8^0) = 442
Adding 473 + 442 = 915
Converting 915 into base 8 = 1623
