Question

pls answer this question​

Answer 1

$for \: finding \: middle \: term \: first \: we \: should \: find \: number \: of \: terms \: \\ so \: n = l - a \div d + 1$

l=216, a=6, d= 7

n= 216-6/7+10

n=31, middle term formula is n+1/2

31+1/2=32/2=16

$therefore \:middle \: term \: is \: 16$