Question

Find the middle term of an ap 10 7 4 is -62

Answer 1

Hey,
Here, a=10
d=-3
Now from formula
Tn=a+(n-1)d
-62=10+(n-1)-3
-62=7-3n
-69=-3n
n=13
Hence friend your middle term will be
Middle term will be
Hence middle term =n+1/2
=7
Now
T7=a+6d
=10+6*-3
=-8 Answer