Question

There is an auditorium with 35 row of seat . There are are 20 seat in the row, 22 seat in the second row ,24 seat in the third row and so on. Find the number of seat inthe twenty second row.

Answer 1

Answer:

Step-by-step explanation:

First multiply22 by 2 and then add it to 20 the answer will be 64

Answer 2

Answer:

Step-by-step explanation:

a=t1=20 ( no. of seats in 1st row)

t2=22

d=t2-a

=22-20

=2

tn=a+(n-1)d

t22=20+(22-1)2

=20+21*2

=20+42

=62

Thus the 22th term is 62