Question

Find the value of medial term of following A.P -6,-2,2,_ _ _ _ _ ,58.

Answer 1

-6,-2,2,_ _ _ _ _ ,58
a= -6
d= -2+6
= 4
an = a+(n-1)d
58=-6+(n-1)4
64=(n-1)4
16=n-1
n=17

Middle Term = 17+1/2
= 18/2
= 9