Difficulty: Easy
Correct Answer: 26
Explanation:
Introduction / Context:These items encode a number transformation rather than ordinary subtraction. We must infer the hidden rule consistent with the examples and apply it to 5 − 5.
Given Data / Assumptions:
Concept / Approach:Observe that n − n maps to n^2 + 1: 4^2+1=17, 6^2+1=37, 2^2+1=5. The same rule applied to n=5 yields 5^2+1=26.
Step-by-Step Solution:
1) Hypothesize mapping f(n) = n^2 + 1.2) Validate on given examples.3) Compute f(5) = 25 + 1 = 26.Verification / Alternative check:Try alternate simple forms (e.g., 2n+9); they do not fit all three examples, reinforcing n^2+1.
Why Other Options Are Wrong:
Common Pitfalls:
Final Answer:26
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