Answer
$300$
Work Step by Step
Choosing three tech stocks out of 6: $C(6,3)=20$ choices.
Choosing two non-tech stocks out of 6: $C(6,2)=15$ choices.
Therefore there are $20*15=300$ different collections
Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 6 - Section 6.4 - Permutations and Combinations - Exercises - Page 438: 63a
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