Mulţimi.Operaţii cu mulţimi
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13 QuestionsShow answers
  • Question 1
    120 seconds
    Q.

    Determinaţi
     elementele mulţimii A={x l x ∈N , 2< x ≤ 6 }

    answer choices

    {0,1,4,5,6}

    {3,4,5,6}

    {2,3,4,5,6}

    {2,3,4,5}

  • Question 2
    180 seconds
    Q.

    Determinaţi elementele mulţimii

    A={x l x∊N , 3|x şi x<18}

    answer choices

    {3,6,9,12,15}

    {6,9,12,15}

    {3,6,15,18}

    {3,7,8,16}

  • Question 3
    120 seconds
    Q.

    Determinaţi {1,3,5,7} \cup  {2,3,5,7,9}

    answer choices

    {3,5,6,7,9}

    {1,3,5,7}

    {1,3,5,7,9}

    {1,2,3,5,7,9}

  • Question 4
    60 seconds
    Q.

    Determinaţi {5,6,9} \cap  {5,9,10}

    answer choices

    {5,6}

    {5,7,10}

    {5,9}

    {5,6,9,10}

  • Question 5
    120 seconds
    Q.

    Determinaţi {1,2,5,9,11,13} \ {5,9,10,11}

    answer choices

    {1,2,11}

    {1,2}

    {11,13}

    {1,2,13}

  • Question 6
    300 seconds
    Q.

    Determinaţi elementele mulţimilor A şi B , dacă 
    A \cup  B = {1,2,3,4,5,6} , 
    A \cap  B = {2,4,6}
    A \ B = {1,3}
    B \ A = {5}

    answer choices

    A={1,2,3,4,6 }  , B={2,4,6}

    A={1,3,4,6} , B={2,4,6}

    A={1,2,3,4,6} , B={2,4,5,6}

    A={1,3,4,6} , B={5}

  • Question 7
    120 seconds
    Q.

    Cunoscând card A=24 , card B =30 , card (A \cup  B)=40 , determinaţi card (A \cap  B).

    answer choices

    10

    15

    54

    14

  • Question 8
    120 seconds
    Q.

    Determinaţi  D35D_{35}   \cap   D5D_5  

    answer choices

    {1,5}

    {1,5,7,15}

    {1,3,5,7,15}

    {1,3,5}

  • Question 9
    120 seconds
    Q.

    Câte submulţimi cu două elemente are mulţimea

    A={1,2,3,4,5}

    answer choices

    4

    8

    10

    6

  • Question 10
    300 seconds
    Q.

    Determinaţi cardinalul mulţimii (A \cup  B) \ (A \cap  B) , unde  A={8,9,11,15} ,         B={9,11,17}

    answer choices

    4

    3

    7

    6

  • Question 11
    120 seconds
    Q.

    Fie mulţimile  D6D_6  ,  D9D_9  şi  M2M_2 . Specificaţi mulţimile finite.

    answer choices

     D6D_6  

     M2M_2  

     D6D_6  şi M2M_2  

     D6D_6  şi  D9D_9  

  • Question 12
    120 seconds
    Q.

    Determinaţi mulţimea A={x \in  N | x \le  20 şi x este multiplul lui 3 }.

    answer choices

    {6,9,12}

    {0,1,3}

    {0,3,6,9,12,15,18}

    {1,3}

  • Question 13
    300 seconds
    Q.

    Determinaţi elementele mulţimii A={x \in  N , 2 \le  2x-4 \le  6}

    answer choices

    {4,5,6}

    {0,1,2,3}

    {3,4,5}

     Φ\Phi  

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