Question

Fie multimile A={1,3,6,7,11}, B={2,5,7,8}.
a)Scrieti multimea C ale carei  elemente sint toate fractii subunitare,avind ca numarator elemente ale multimii A,iar ca numitor- elemente ale multimii B

b)Scrieti multimea D ale carei elemente sint toate fractii subunitare,avind ca numarator elemente ale multimii B,iar ca numitro-elemente ale multimi A.

Answer 1

c) C={1/2;1/5;1/7;1/8;3/5;3/7;3/8;6/7;6/8;7/8}
b) D={2/3;2/6;2/7;2/11;5/6;5/7;5/11;7/11;8/11}

Answer 2

C={1/2,1/5,1/7,1/8,3/5,3/7,3/8,6/7,6/8,7/8 }                                                           d={2/3,2/6,2/7,2/11,5/6,5/7,5/11,7/11,8/11}