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Anna loves to read books. In all, she has read 12 mystery novels, 8 science fiction novels, 5 fantasy novels, and 3 historical novels.
What is the ratio of Anna's mystery novels to all of her books?
7
8
9
4
5
6
1
2
3
C
0
.
:
7
8
9
4
5
6
1
2
3
C
0
.
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