Question

pag 72 ex 3  pag 73 4,5,6,13

Answer 1

3.
A={0,1,2,3,4,5,6,7}
B={0,1,2,3,4,5}
C={0,1,2,3,4,5,6}
D={0,1,2,3,4,5,6,7,8}
E={4,5,6,7,8,9}
F={0,1,2,3,4,5,6}

4.
a) A={4,5,6,7}      submultimi {4,5,} ;{5,6} ; {6,7}
b) A={m,n,p,q}    submultimi{m,n} ;{n,p} ;{p,q}

5.
a) A={0,1,2}      submultimi {0,1} ;{0,2} ; {1,2}; {2,0}
b) A={a,b,c}    submultimi{a,b} ;{b,c} ;{a,c}; {c,a}

6.
a) A={l,m,n}      submultimi {l,m,} ;{l,n} ; {m,n} ; {m} ; {n}
b) A={1,2,5}    submultimi{1,2} ;{1,5} ;{2,5} ;{2) ;{5}

13.a)   x=3    y=4
13. b)  x=0    y=5