The sum of the first n odd number is n^2. The sum of the first 30 odd numbers is

A. 60
B. 90
C. 300
D. 900
Thank you for the help in advance =)

well, what is 30^2?

To find the sum of the first n odd numbers, we can use the formula for the sum of an arithmetic series.

The formula for the sum of an arithmetic series is given by:

Sum = (n/2) * (a + l),

where n is the number of terms, a is the first term, and l is the last term.

In this case, n is the number of odd numbers, a is the first odd number (which is 1), and l is the last odd number (which is 2n - 1).

So we need to find the value of l. The last odd number is given by 2n - 1, so for n = 30, we have:

l = 2 * 30 - 1 = 59.

Now we can plug in the values of n, a, and l into the formula:

Sum = (30/2) * (1 + 59) = 15 * 60 = 900.

Therefore, the sum of the first 30 odd numbers is 900.

The correct answer is D. 900.