Binomial: a relation between two probabilities fixes n or p, then find another probability

1. A.
   $\frac{3}{16}$
2. B.
   $\frac{1}{2}$
3. C.
   $\frac{5}{16}$
4. D.
   $\frac{1}{32}$

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1. A.
   $\frac{32}{625}$
2. B.
   $\frac{80}{243}$
3. C.
   $\frac{40}{243}$
4. D.
   $\frac{128}{625}$

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1. A.
   $\frac{15}{2^{12}}$
2. B.
   $\frac{15}{2^{13}}$
3. C.
   $\frac{15}{2^{14}}$
4. D.
   $\frac{15}{2^{8}}$

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1. A.
   1320
2. B.
   1088
3. C.
   $\frac{120}{1331}$
4. D.
   $\frac{1088}{1089}$

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1. A.
   $\frac{275}{6^{5}}$
2. B.
   $\frac{36}{5^{4}}$
3. C.
   $\frac{181}{5^{5}}$
4. D.
   $\frac{46}{6^{4}}$

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1. A.
   $\frac{105}{16}$
2. B.
   $\frac{7}{16}$
3. C.
   $\frac{77}{36}$
4. D.
   $\frac{49}{16}$

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1. A.
   30
2. B.
   90
3. C.
   15
4. D.
   60

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