Question

Find the 28th term of the arithmetic sequence -1, -3, -5, …

Answer 1

-55

Explanation:

2nd term=> -1 + -2 × (2 - 1)

3rd term=> -1 + -2 × (3 - 1)

:

28th term=> -1 + -2 × (28 - 1)

=> -1 - 54 = -55