College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 9, Counting and Probability - Chapter 9 Test - Page 686: 1

Answer

81

Work Step by Step

They have 3 choices per grandchild and since we can't arrange the children as they are sorted by age, $3^4 = 81$
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