Asked by ABC
                Find the sum of an A.P of seventeen terms whose middle term is five .
            
            
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                    Answered by
            Reiny
            
    of 17 terms, the middle term is term 9
so
a + 8d = 5 -----> a = 5-8d
sum(17) = (17/2)(2a + 16d)
= (17/2)(10-16d + 16d)
= (17/2)(10)
= 85
    
so
a + 8d = 5 -----> a = 5-8d
sum(17) = (17/2)(2a + 16d)
= (17/2)(10-16d + 16d)
= (17/2)(10)
= 85
                    Answered by
            Mitch sabido
            
    Find the sum of an a.p of seventeen  terms whose middle terms is 5
    
                    Answered by
            Anonymous
            
    Find the sum of 17 term of AP whose middle term is 40
    
                    Answered by
            Anonymous
            
    An A.P contains 25 terms.Of the first term is 15 and the least term is 111,find the middle term
    
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