Identify the 25th term of the arithmetic sequence 2, 1 and 3 over 5,

1 and 1 over 5 ...

We are given the arithmetic series 2, 1 3/5, 1 1/5 ... In this case, the arithmetic difference is - 2/5 by taking the difference of 2 and 1 3/5 and 1 3/5 and 1/5. The general formula of arithmetic sequence is an = a1 + d * (n-1). Substituting, an = 2 - 2/5 * (n-1). a25 hence is equal to a25 = 2-2/5 * (25-1) = - 38/5