an=247, a=7, d=6, n=? Then an=a+(n-1)d 247=7+(n-1)6 (247-7)/6=n-1 240/6=n-1 n-1=40 n=40+1=41 Then n+1/2 41+1/2=42/2=21 Middle term is 21 a21=a+20d =7+20(6) =7+120=127 Ans:- 127

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Abhijeet Admane 7 years, 2 months ago

Middle term of Ap is

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