If 15 is the fifth number in a series of five consecutive odd numbers, what is the third number in the series?

Question

Mathematics

Silly Gilly

7 December, 00:26

If 15 is the fifth number in a series of five consecutive odd numbers, what is the third number in the series?

+1

Answers (1)

Know the Answer?

Alan · Answer 1

The five numbers can be represented by (2n+1), (2n+3), (2n+5), (2n+7), and (2n+9), where n is an integer.

2n+9 = 15

n = 3

The third number is 2n+5 = 11