to find 7th and nth term of the series 2/9,1/3,1/2,2....
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a= 2/9 , d= 1/3 -2/9 = 3-2/9 = 1/9 , n= 7
An=a+(n-1)d = 2/9 + (7-1)1/9
= 2/9 + 8 × 1/9
An = 2/9 + 8/9 = 10/9
An = 10/9
An = a+(n-1) d = 2/9 +(n-1) ×1/9 = 2/9 +n/9 -1/9
An = n/9 +1/9 = n+1/9
An = n+1/9
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