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