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40 divided by 2 =20. 20 is the right answer
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Range of Tally marks. Frequency
marks
Obtained
0-5. IIII. 4
5-0. IIII/. 5
10-15. IIII/. 5
15-20. IIII/ IIII/ III. 13
20-25. IIII/ IIII. 9
25-30. IIII. 4
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40
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