Question

the sum of the first eleven terms of an A.P is 231.findsixth term of A.P​

Answer 1

Answer:

ans is 21

Step-by-step explanation:

sn = n/2*(2a+(n-1)d)

n=11. sn=231

231=11/2*(2a+(11-1)d)

231*2/11=2a+10d

21*2=2a+10d

divide by 2

21=a + 5d-1

now

t6=a+(6-1)d

t6=a+5d

t6=21. from 1