What is the nth term of the arithmetic sequence 7 5 3 1?

IT is A.P. Arithmetic progression

Formula to solve

n th term = First_term + ( n - 1)*difference_between_two_no

n=9

first term=7

difference_between_two_no = nth_term - (n-1)th_term = 5-7 = 3-5 =1-3 = -2

nth term = 7+8*(-2) = -9

Another Answer:-

The nth term = 9-2n