alleryలేబుల్లు 7, 12, 17, ..., 82 పెరుగుదల 5; ఒకటి పోతుంది, మొత్తం 660. లేబుల్ కోల్పోయారా?
A62
B47
C57
D52
Answer & Solution
Correct answer: D. 52
16 లేబుల్స్ మొత్తం 16 × (7 + 82) ÷ 2 = 712 ఉన్నాయి, కాబట్టి కోల్పోయిన లేబుల్ 712 − 660 = 52.
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