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a) A = {13; 14; 15}
b) B = {1; 2; 3; 4}
c) C = {13; 14; 15}
1/\(A=\left\{21;24;27;30;33;36;39\right\}\)
\(B=\left\{30;35;40\right\}\)
\(C=\left\{32;36;40\right\}\)
2/\(D=\left\{30\right\}\)\(;\)\(E=\left\{40\right\}\)\(;\)\(F=\left\{36\right\}\)
a/
\(x\in\left\{0;1;2;3;4;5\right\}\)
b/
\(x\in\left\{6;7;8;9\right\}\)
c/
\(x\in\left\{7;8;9;10;11;12\right\}\)
d/
\(x\in\left\{8;9;10;11;12\right\}\)
e/
\(x\in\left\{7;8;9;10;11;12\right\}\)
a)A={0; 1; 2; 3; 4; 5}
b)B={6; 7; 8; 9}
c)C={7; 8; 9; 10; 11; 12}
d)D={8; 9; 10; 11}
e)E={7; 8; 9; 10; 11; 12}
a, { x \(\in\) N | 5 < x < 9 }
A = { 6;7;8 }
b, { x \(\in\) N* | x < 7 }
B = { 1;2;3;4;5;6 }
a) X = {x ∈ N | 8 < x < 15}
→ X = {9, 10, 11, 12, 13, 14}
b) Y = {x ∈ N | x < 7}
→ Y = {0, 1, 2, 3, 4, 5, 6}
c) Z = {x ∈ N | 13 ≤ x ≤ 20}
→ Z = {13, 14, 15, 16, 17, 18, 19, 20}
d) T = {x ∈ N | 4 ≤ x < 9}
→ T = {4, 5, 6, 7, 8}
a) X={9;10;11;12;13;14}
b) Y={0;1;2;3;4;5;6}
c) Z={13;14;15;16;17;18;19;20}
d) T={4;5;6;7;8}
\(A=\left\{19;20\right\}\)
\(B=\left\{1;2;3;\right\}\)
\(C=\left\{35;36;37;38\right\}\)
a) A = { x € N | 15 \(\le\) x \(\le\)22 }
\(\Rightarrow\)x € { 15 ; 16 ; 17 ; 18 ; 19 ; 20 ; 21 ; 22 }
a) A = { x E N | 15 \(\le\)x \(\le\)22}
=> x E { 15 ; 16 ; 17 ; 18 ; 19 ; 20 ; 21 ; 22 }