Analogy (numbers) — “17 : 34 :: ? : 10”. Use the same operation to find the missing number.
Verbal Reasoning
Analogy
Difficulty: Easy
Choose an option
Answer
Correct Answer: 5
Explanation
Introduction / Context:The mapping 17 → 34 doubles the number. Apply the same operation to get a number that maps to 10.
Given Data / Assumptions:
- Rule: x → 2x.
- We want y such that 2y = 10.
Concept / Approach:Solve for y = 10 / 2.
Step-by-Step Solution:
Compute y = 5.Verification / Alternative check:Check the stem: 17 × 2 = 34; thus symmetry holds.
Why Other Options Are Wrong:Only 5 doubles exactly to 10.
Common Pitfalls:Assuming addition when the stem suggests multiplication.
Final Answer:5