Correct option is D
The given triad is: 251 – 332 – 422,
Logic: the sum of the digits for each number is 8
251 → 2 + 5 + 1 = 8
332 → 3 + 3 + 2 = 8
422 → 4 + 2 + 2 = 8
Now, checking the options:
Option A: Sum of digits is not 8.
Option B: Sum of digits is not 8.
Option C: Sum of digits is not 8 for all numbers.
Option D:161 → 1 + 6 + 1 = 8, 512 → 5 + 1 + 2 = 8, 710 → 7 + 1 + 0 = 8.
Thus, the correct answer is (D) 161 – 512 – 710.
English
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