In[1]:= ListA = {6, 8, 9, 10}
ListB = {4, 5, 6, 8, 10}
ListC = {4, 6, 7, 8, 9}
ListD = {5, 6, 7, 9, 10}
Print["1.a)"]
Print[Union[ListA, ListB, ListC, ListD]]

During evaluation of In[1]:= 1.a)

During evaluation of In[1]:= {4,5,6,7,8,9,10}

In[7]:= Print["b)"]
Print[Intersection[ListA, ListB]]

During evaluation of In[7]:= b)

During evaluation of In[7]:= {6,8,10}

In[9]:= Print["c)"]
Print[Complement[ListB, ListD]]

During evaluation of In[9]:= c)

During evaluation of In[9]:= {4,8}

In[3]:= Print["4."]
For[i = 3001, i < 3032, i = i + 2, Print[i " ", PrimeQ[i]]]

During evaluation of In[3]:= 4.

During evaluation of In[3]:= 3001  True

During evaluation of In[3]:= 3003  False

During evaluation of In[3]:= 3005  False

During evaluation of In[3]:= 3007  False

During evaluation of In[3]:= 3009  False

During evaluation of In[3]:= 3011  True

During evaluation of In[3]:= 3013  False

During evaluation of In[3]:= 3015  False

During evaluation of In[3]:= 3017  False

During evaluation of In[3]:= 3019  True

During evaluation of In[3]:= 3021  False

During evaluation of In[3]:= 3023  True

During evaluation of In[3]:= 3025  False

During evaluation of In[3]:= 3027  False

During evaluation of In[3]:= 3029  False

During evaluation of In[3]:= 3031  False

In[5]:= Print[
 Factor[13 x^5 - 26 x^4 - 546 x^3 + 1924 x^2 - 299 x - 2730]]

During evaluation of In[5]:= 13 (-5+x) (-3+x) (-2+x) (1+x) (7+x)

6.
Solve[56 x^8 + 137 x^7 - 1266 x^6 - 3428 x^5 + 6232 x^4 + 18717 x^3 +
   594 x^2 - 5562 x + 648 == 0, x]

{{x -> -3}, {x -> -3}, {x -> -3}, {x -> 1/8}, {x -> 3/7}, {x ->
   4}, {x -> 1 - Sqrt[3]}, {x -> 1 + Sqrt[3]}}

7.
varX = Solve[x + y + 2 z == 56, x]

Out[10]= {{x -> 56 - y - 2 z}}

In[11]:= varY = Solve[x - 2 y - z == -22, y]

Out[11]= {{y -> 1/2 (22 + x - z)}}

In[12]:= varZ = Solve[2 x + 3 y + 4 z == 119, z]

Out[12]= {{z -> 1/4 (119 - 2 x - 3 y)}}

In[15]:= ProductXYZ = varX*varY*varZ

Out[15]= {{(x -> 56 - y - 2 z) (y -> 1/2 (22 + x - z)) (z ->
     1/4 (119 - 2 x - 3 y))}}

In[24]:= 12.
For[i = 1, i < 26, i++, Print[Prime[i]]]

During evaluation of In[24]:= 2

During evaluation of In[24]:= 3

During evaluation of In[24]:= 5

During evaluation of In[24]:= 7

During evaluation of In[24]:= 11

During evaluation of In[24]:= 13

During evaluation of In[24]:= 17

During evaluation of In[24]:= 19

During evaluation of In[24]:= 23

During evaluation of In[24]:= 29

During evaluation of In[24]:= 31

During evaluation of In[24]:= 37

During evaluation of In[24]:= 41

During evaluation of In[24]:= 43

During evaluation of In[24]:= 47

During evaluation of In[24]:= 53

During evaluation of In[24]:= 59

During evaluation of In[24]:= 61

During evaluation of In[24]:= 67

During evaluation of In[24]:= 71

During evaluation of In[24]:= 73

During evaluation of In[24]:= 79

During evaluation of In[24]:= 83

During evaluation of In[24]:= 89

During evaluation of In[24]:= 97