Question

There are 25 rows of seats in an auditorium. The 1st row is of 20 seats, the 2nd row of 22 seats, the 3rd row of 24 seats and so on. How many seats are there in the 21st row? ​

Answer 1

Answer:

There are 60 chairs in the 21st row.

There are 60 chairs in the 21st row.Hence, this is the answer.

There are 60 chairs in the 21st row.Hence, this is the answer.According to the question,

There are 60 chairs in the 21st row.Hence, this is the answer.According to the question,a=20

There are 60 chairs in the 21st row.Hence, this is the answer.According to the question,a=20d=22−20=2

There are 60 chairs in the 21st row.Hence, this is the answer.According to the question,a=20d=22−20=2n=21

There are 60 chairs in the 21st row.Hence, this is the answer.According to the question,a=20d=22−20=2n=21We know that

There are 60 chairs in the 21st row.Hence, this is the answer.According to the question,a=20d=22−20=2n=21We know thata n =a+(n−1)d

There are 60 chairs in the 21st row.Hence, this is the answer.According to the question,a=20d=22−20=2n=21We know thata n =a+(n−1)da n =20+(20)×2

There are 60 chairs in the 21st row.Hence, this is the answer.According to the question,a=20d=22−20=2n=21We know thata n =a+(n−1)da n =20+(20)×2a n =60

Answer 2

Answer:

42 + 20 = 62

this is cuz u add plus 2 or u multiply  21*2+20