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PLEASE HELP!!! What is the sum of the last four terms of the series 7 + 9 + 11 .... + 21 A. 72 B. 40 C. 112
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1 vote
PLEASE HELP!!!

What is the sum of the last four terms of the series
7 + 9 + 11 .... + 21

A. 72

B. 40

C. 112

User Stoica Mircea
by
5.5k points

2 Answers

6 votes
72 is the correct answer
User Apfelbox
by
4.9k points
6 votes
Hello!

It starts with 7 and adds 2

The full question is:

7 + 9 + 11 + 13 + 15 + 17 + 19 + 21

The last 4 terms ⇒ 15 + 17 + 19 + 21

You have to add the 4 numbers together.

15 + 17 + 19 + 21 = 72

Your answer is A. 72
User Yazid
by
5.3k points
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