Find the sum of 2 middle most term AP-4/3,-1,-2/3,......13/3 .

1.	Find the sum of 2 middle most term AP-4/3,-1,-2/3,......13/3 .
Answer» Here in the given A.P the first term a , = -4/3an = 11/3 and d = 1/3an = a + ( n - 1 ) d11/3 = -4/3 + ( n - 1 ) 1/35 = n/3 - 1/35 + 1/3 = n/316/3 = n/316 = nNow the middle term = n/2 , n/2 + 1= 8th term and 9th term.a + 7d + a + 8d 2a + 15d 2(-4/3) + 15(1/3)-8/3 + 5(-8 + 15)/3 = 7/3

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