Correct option is B
We are given a triad:
668 – 776 – 992
Logic: sum of digits for each: → 20
668 → 6 + 6 + 8 = 20
776 → 7 + 7 + 6 = 20
992 → 9 + 9 + 2 = 20
So, the common logic is:
Sum of digits = 20 in all three numbers.
Sum of digits = 20 in all three numbers.
Now, let's check options:
(A) 195 – 285 – 348
195 → 1 + 9 + 5 = 15
285 → 2 + 8 + 5 = 15
348 → 3 + 4 + 8 = 15
(B) 488 – 398 – 299
4 + 8 + 8 = 20
3 + 9 + 8 = 20
2 + 9 + 9 = 20
All sums = 20
All sums = 20
(C) 725 – 623 – 542
7 + 2 + 5 = 14
6 + 2 + 3 = 11
5 + 4 + 2 = 11
(D) 144 – 225 – 729
1 + 4 + 4 = 9
2 + 2 + 5 = 9
7 + 2 + 9 = 18
Thus, correct option is (b).