Question

A10 of an AP=31 & A20=71 then A30=?​

Answer 1

Answer:

here is your answer ......

Answer 2

Answer:

A10=30

it means

a+9d=30...........(1)

A20=70

it means

a+19d=70............(2)

Now we can solve these equation bu alumination and substitution method

and then put the value of

a & d in equation 3

the equation 3 is

a+29d............(3)

you will get your answer

hope it helpful to you!!!!!!!