Question

There are 20 seats in the
front row of a theatre. Each
successive row contains two more
seats than the previous row. If there
are 18 rows, how many seats are
there in the last row of the theatre?​

Answer 1

Answer:

ans is 54 ,pls refer the pic

Answer 2

Step-by-step explanation:

20,22,24,26,28,30,32........54

it is an ap

where a= 20 and d= 2

and last term of this 54

therefore last row contains 54 seats

hope it will help you...!!!