Dice give the coefficients: probability that a system has a unique solution (or none)

1. A.
   $p = \frac{1}{6}$ and $q = \frac{1}{36}$
2. B.
   $p = \frac{5}{6}$ and $q = \frac{5}{36}$
3. C.
   $p = \frac{5}{6}$ and $q = \frac{1}{36}$
4. D.
   $p = \frac{1}{6}$ and $q = \frac{5}{36}$

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1. A.
   21
2. B.
   18
3. C.
   20
4. D.
   19

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1. A.
   21
2. B.
   24
3. C.
   20
4. D.
   22

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