Answer
$1/35$
Work Step by Step
3 blue, 5 yellow, 7 red
P(first marble is blue) = $3/(3+5+7) = 3/15$
P(second marble is blue) = $2/(3+5+7-1) = 2/14$
$3/15*2/14 = 1/5*1/7 = 1/35$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 12 - Data Analysis and Probability - Chapter Test - Page 779: 18
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