Answered

Get the answers you need at Westonci.ca, where our expert community is always ready to help with accurate information. Ask your questions and receive accurate answers from professionals with extensive experience in various fields on our platform. Our platform provides a seamless experience for finding reliable answers from a network of experienced professionals.

what is the sum of the first 30 odd numbers? How to calculate it without having to add all of them.

Sagot :

Ryan2
See that odd number are in a Aritmetic progression with a1 = 1 and r = 2

30th number of sequence is given by:

[tex]a_{30}=a_1+29r\\ \\ a_{30}=1+29*2\\ \\ a_{30}=59[/tex]

Now you can calculate the sun by:

[tex]S_{30}=\frac{30(1+59)}{2}=\frac{30*60}{2}=900[/tex]
We hope this information was helpful. Feel free to return anytime for more answers to your questions and concerns. We appreciate your time. Please come back anytime for the latest information and answers to your questions. Discover more at Westonci.ca. Return for the latest expert answers and updates on various topics.