Processing math: 100%
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Probability
AIME
Basic
2014
Problem - 84
An urn contains
4
green balls and
6
blue balls. A second urn contains
16
green balls and
N
blue balls. A single ball is drawn at random from each urn. The probability that both balls are of the same color is
0.58
. Find
N
.
Show solution
Solving
4
4
+
6
×
16
16
+
N
+
6
4
+
6
×
N
16
+
N
=
58
100
gives answer
N
=
144
.
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