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| 1. |
ntIf the ratios of the sum of the first n terms of two APs is 7n+1:4n+27, what is the ratios of their 9th terms?n |
| Answer» ntIf the ratios of the sum of the first n terms of two APs is 7n+1:4n+27, what is the ratios of their 9th terms?n | |