Question
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Answer (Detailed Solution Below)
Option 4 : 72 / 72
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Detailed Solution
सही उत्तर 72 / 72 है।
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prepsnap.in • Part -AQuestion:
A printing press numbers its trial pages 2, 6, 12, 20, 30, … in that order. What is the 8th number in this pattern? / एक मुद्रणालय अपने परीक्षण पृष्ठों पर क्रमशः 2, 6, 12, 20, 30, … संख्याएँ डालता है। इस प्रतिरूप में 8वीं संख्या क्या है?
1.
56 / 56
2.
90 / 90
3.
64 / 64
4.
72 / 72
Correct Answer: 72 / 72
The nth term is n(n+1): 1×2 = 2, 2×3 = 6, 3×4 = 12, …, so the 8th term is 8×9 = 72. / nवाँ पद n(n+1) है: 1×2 = 2, 2×3 = 6, 3×4 = 12, …, अतः 8वाँ पद 8×9 = 72 है।
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