Question

The seats at a local baseball stadium are arranged so that each row has five more seats than the row below it. If there are four seats in the first row, how many seats are in row 23?

Answer 1

23552

Answer 2

@jdoe0001

Answer 3

@ranga

Answer 4

This is an arithmetic sequence: 4, 9, 14, 19, ....
What is the 23rd term of this series?

nth term of an arithmetic sequence = a1 + (n-1)d ------ (1)
where a1 is the first term. Here a1 = 4
d is the common difference. d = 5
n = 23
Plug the numbers into the formula (1) and find the 23rd term in the sequence.