The ratio 6th and8th ofan
a.P is7:9. Find the ratio of 9th and to 13th term
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Answer:
Step-by-step explanation:
First term=a , common difference=d
T6=a+5d
T8=a+7d
(a+5d)/(a+7d)=7/9
=> 9a+45d=7a+49d
=> a=2d
T9/T13= (a+8d)/(a+12d)=24d/36d=2/3
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