Question

find the value of the middle term of the A. P. 7,13,19,..............,247.

Answer 1

hey mate....
first we have to find no of terms in this AP.
a = 7
d = 13-7 = 6

then last term = a+(n-1)d
247 = 7+(n-1)6
240= (n-1)6
n-1 = 40
n = 41

so number of terms are odd
hence middle term = n+1/2 = 41+1/2 = 21

so....
middle term = a + (21-1)d
= 7+20×6
= 7+120
= 127

HOPE THIS HELP YOU ☺☺☺

Answer 2

I hope this answer helpful for you pls mark as brainlist