Question

Find the 123rd term of the sequence: 5, -5, 5, -5,.......

Answer 1

You see, every even number (2, 4, 6, 8, 10) is going to be negative. Every odd number (1, 3, 5, 7, 9) is going to be positive. Since 123 is odd, the answer is 5.

Answer 2

the 123rd term of the sequence is 5