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AMC 8 · Counting & Probability
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12
A board game spinner is divided into three regions labeled
A
A
A
,
B
B
B
, and
C
C
C
. The probability of the arrow stopping on region
A
A
A
is
1
3
\frac{1}{3}
3
1
and on region
B
B
B
is
1
2
\frac{1}{2}
2
1
. The probability of the arrow stopping on region
C
C
C
is
A
1
12
\frac{1}{12}
12
1
B
1
6
\frac{1}{6}
6
1
C
1
5
\frac{1}{5}
5
1
D
1
4
\frac{1}{4}
4
1
E
1
3
\frac{1}{3}
3
1