Here is a number pattern: 1/2, 1/4, 1/6, 1/8, 1/10.

Write an expression for the nth term

2 answers

n = 1

Denominator = 2 = 2 * 1

n = 2

Denominator = 4 = 2 * 2

n = 3

Denominator = 6 = 2 * 3

n = 4

Denominator = 8 = 2 * 4

n = 5

Denominator = 10 = 2 * 5

Expression for the n-th term:

1 / 2n
What is the 11th term in the sequence −1, 4, −9, 16, −25, ..? *