Find the middle term of Ap 7,13,19,.247.

1.	Find the middle term of Ap 7,13,19,.247.
Answer» And a11 is 76 n is 21. When n is odd,=(n+1/2) th term.21+1/2=11. 11 is the right answer an=247, a=7, d=6, n=?Thenan=a+(n-1)d247=7+(n-1)6(247-7)/6=n-1240/6=n-1n-1=40n=40+1=41Thenn+1/241+1/2=42/2=21Middle term is 21a21=a+20d =7+20(6) =7+120=127Ans:- 127 Middle term of Ap is

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