Question

in a ap 4th term and 8th term are the ratio 1:2 if the 10th term is 30 find the ap​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

a+3d/a+7d= 1/2

(a+3d)2=a+7d

2a+6d = a+7d

a=d

it is also given that

a+9d = 30

a+9a=30

10a=30

a=3

hence ,a=d so d is also equal to 3

A.P is 3 ,6,9,12,so on