Question

find the middle term of an AP 6, 13, 20_ _ _ _ ......216​

Answer 1

Answer:

hey

a= 6

d= 7

n=?

so

tn=a+(n-1)d

216= 6+7n-7

216+1=7n

217=7n

n=31

so middle term

1/2(n+1)

= 31+1/2

=16

number

tn=6+(16-1)7

=6+15×7

=6+105

=111

hope it may help u

please mark it as a brainlist

Answer 2

Answer:

6,13,20,......216

common difference D=13-6=7

ist term a=6,

Tñ=a+(n-1) d

216=6+(n-1) 7

n-1=210/7=30

n=31,

so, middle term =(31+1)/2=16

T16=6+(16-1) *7=6+105=111

so, middle term is 111.