Please anyone solve this three Ap questions ......Fast .....fasT.......
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(a+10d)/(a+17d)=2/3
3a+30d=2a+34d
a=4d
Ratio of 5th term and 21st term is
(a+4d)/(a+20d)=(4d+4d)/(4d+20d)=8d/24d=1:3
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