College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 10 - Section 10.3 - Probability - 10.3 Assess Your Understanding - Page 705: 40

Answer

See below.

Work Step by Step

We know that probability$=\frac{\text{number of favourable outcomes}}{\text{number of all outcomes}}.$ Let $B$ represent a boy, $G$ a girl, then the sample space is: $X=\{BBBB,BBGB,BGBB,GBBB,GGBB,GBGB,BGGB,GGGB, BBBG,BBGG,BGBG,GBBG,GGBG,GBGG,BGGG,GGGG\}$. The good outcomes are: $X=\{GGBB,GBGB,GBBG,BGGB,BGBG,BBGG\}$ Hence here probability$=\frac{|X|}{|S|}=\frac{6}{16}=0.375.$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After 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.