Find the Number of Terms in the Sequence 2n-1: Odd Number Series

The sequence given by $2n-1$ is a series of numbers.

Let's evaluate this sequence by calculating the first few terms:

• When $n = 1$, $2(1) - 1 = 1$
• When $n = 2$, $2(2) - 1 = 3$
• When $n = 3$, $2(3) - 1 = 5$
• When $n = 4$, $2(4) - 1 = 7$

From these calculations, the sequence produced is $1, 3, 5, 7, \ldots$, which are all odd numbers.

Therefore, the numbers contained in the series $2n-1$ are Odd numbers.

The correct answer, according to the provided choices, is: Odd.