Question

10th term is equal to​

Answer 1

Answer:

Answer is

Step-by-step explanation:

Let x be first term and a be the common difference

10th term = x+9a

20th term=x+19a

30th term=x+29a

given

10*10th term=20*20th term

10(x+9a)=20(x+19a)

10x+90a=20x+380a

20x-10x+380a-90a=0

10x+290a=0

10(x+29a)=0

x+29a=0

30th term=0.