Analogy — Digit-sum mapping: 55 : 10 :: ? : ? Select the pair where the right number equals the sum of digits of the left, mirroring 5 + 5 = 10.

Difficulty: Easy

Correct Answer: 88 : 16

Explanation:

Introduction / Context:The rule appears to be “map a two-digit number to the sum of its digits”: 55 → 5 + 5 = 10. We must find another example matching this mapping.

Concept / Approach:Compute digit sums for each left-hand number and compare with the right-hand value.

Why Other Options Are Wrong:

  • 15 : 5 — 1 + 5 = 6 ≠ 5.
  • 18 : 1 — 1 + 8 = 9 ≠ 1.
  • 16 : 75 — 1 + 6 = 7 ≠ 75.
  • None of these — invalid since 8 + 8 = 16 matches.

Final Answer:88 : 16

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