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SSC CGL Tier-1 6-06-2019 Shift 2 Solved Paper

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Question : 54

Total: 100

The average of thirteen numbers is 80. The average of the first five numbers is 74.5 and that of the next five numbers is 82.5. The 11 ‌th number is 6 more than the 12‌th number and the 12‌th number is 6 less than the 13‌th number. What is the average of the 11‌th and the 13‌th numbers?

87
86
86.5
87.5

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