Answer
A. 21
B. 78
C. 18
D. 18
Work Step by Step
A. For i = 1,
2+3+4 = 9
For i = 2,
3+4+5 = 12
Hence,
9+12=21.
Discrete Mathematics and Its Applications, Seventh Edition
by Rosen, Kenneth
Published by
McGraw-Hill Education
ISBN 10:
0073383090
ISBN 13:
978-0-07338-309-5
Chapter 2 - Section 2.4 - Sequences and Summations - Exercises - Page 169: 33
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
