1. A
   91
2. B
   96
3. C
   98
4. D
   99

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1. A
   0
2. B
   10
3. C
   20
4. D
   40

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1. A
   80
2. B
   85
3. C
   90
4. D
   95

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1. A
   67
2. B
   71
3. C
   75
4. D
   79

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1. A
   79.5
2. B
   79
3. C
   78.5
4. D
   77

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1. A
   -1
2. B
   0
3. C
   1
4. D
   2

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1. A
   $\frac{1}{5}$
2. B
   $\frac{2}{5}$
3. C
   $\frac{3}{5}$
4. D
   $\frac{4}{5}$

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1. A
   $\frac{2}{7}$
2. B
   $\frac{3}{7}$
3. C
   $\frac{4}{7}$
4. D
   $\frac{5}{7}$

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1. A
   $\frac{1}{4}$
2. B
   $\frac{1}{3}$
3. C
   $\frac{3}{5}$
4. D
   $\frac{3}{4}$

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1. A
   $\frac{80}{729}$
2. B
   $\frac{10}{81}$
3. C
   $\frac{10}{243}$
4. D
   $\frac{160}{729}$

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1. A
   $\frac{665}{729}$
2. B
   $\frac{64}{729}$
3. C
   $\frac{4}{243}$
4. D
   $\frac{1}{729}$

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1. A
   $\frac{728}{729}$
2. B
   $\frac{665}{729}$
3. C
   $\frac{653}{729}$
4. D
   $\frac{596}{729}$

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1. A
   25
2. B
   26
3. C
   27
4. D
   28

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1. A
   1
2. B
   2
3. C
   3
4. D
   4

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1. A
   25
2. B
   50
3. C
   75
4. D
   100

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