If 15 is the fifth number in a series of 5 consecutive odd number, what is the third number in the series?

Question

Chad Russo

Mathematics

13 November, 02:53

If 15 is the fifth number in a series of 5 consecutive odd number, what is the third number in the series?

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Answers (2)

Know the Answer?

Lyric Cross · 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

Martha Rollins · Answer 2

You really don't have to do hardly ANY work to solve this one.

The fifth of five odd numbers is 15.

So the fourth one is 13.

So the third one is 11.

An I missing something?