Civil Service Exam Reviewer · Logical Reasoning · hard
If 9 ★ 7 = 130, 8 ★ 2 = 68, then 6 ★ 2 = ?
- 32
- 64
- 20
- 40
Answer
D. 40
Solution
The rule is a ★ b = a² + b². Check: 9 ★ 7 → 130; 8 ★ 2 → 68. So 6 ★ 2 = 40.
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