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1. Find the sum of all the \(11\) terms of an AP whose middle most term is \(30\).
 
The sum of \(11\) terms of the A.P. is .
 
 
2. Find the sum of last ten terms of the AP: \(8, 10, 12,..., 126\).
 
The sum of the last ten terms of the A.P. is.