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

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1. A
   80
2. B
   100
3. C
   150
4. D
   200

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

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1. A
   39·8
2. B
   39·7
3. C
   39·6
4. D
   39·5

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1. A
   At least one of them will be selected
2. B
   Only one of them will be selected
3. C
   None of them will be selected
4. D
   Both of them will be selected

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1. A
   $\frac{1}{91}$
2. B
   $\frac{4}{91}$
3. C
   $\frac{6}{91}$
4. D
   $\frac{15}{91}$

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

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1. A
   $\frac{1}{15}$
2. B
   $\frac{1}{2}$
3. C
   $\frac{2}{15}$
4. D
   $\frac{1}{5}$

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1. A
   $Y=0\cdot175X-5$
2. B
   $Y=1\cdot12X-5\cdot8$
3. C
   $Y=1\cdot12X-5$
4. D
   $Y=0\cdot17X+5\cdot8$

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1. A
   $5, \frac{1}{5}$
2. B
   $5, \frac{2}{5}$
3. C
   $10, \frac{3}{5}$
4. D
   $10, \frac{4}{5}$

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1. A
   1 only
2. B
   2 only
3. C
   Both 1 and 2
4. D
   Neither 1 nor 2

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1. A
   $\frac{9}{29}$
2. B
   $\frac{10}{29}$
3. C
   $\frac{19}{29}$
4. D
   $\frac{28}{29}$

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