Question

Ajutați-ma cu aceste 4 exerciții vă rog foarte frumos!​

Answer 1

3.   A={0,1,2,3,4,5,6,7,8}

     B={0,3,6,9,12,15,18,21,24}

     C={5,7,11,15,19,23}

A ∪ B={0,1,2,3,4,5,6,7,8,9,12,15,18,21,24}

B ∪ C={0.3.5.6.7.9.11.12.15.18.19.21.23.24}

A ∪ C={0.1.2.3.4.5.6.7.8.11.15.19.23}

A ∪ B ∪ C={0,1,2,3,4,5,6,7,8,9,11,12,15,18,19,21,23,24}

A ∩ B={0.3.6}

A ∩ C={5.7}

B ∩ C={15}

A ∩ B ∩ C=∅

A ∪ (B ∩ C)= {0.1.2.3.4.5.6.7.8.15}

(A ∪ B) ∩ C={5.7.15}

(A ∩ B) ∪ (B ∩ C)={0.3.6.15}

A ∪ B ∩ ∅ =∅

4.  A={-1.a.3.5}

{-2.-1.3.4.5}∪A={-2.-1.3.4.5.6}

a=6

5. B={0.x.4.6}

B∩{1.2.3.4}={2.4}

x=2

6. A={0.1.2.3.4.5}

A∩B=∅

A∪B={0.1.2.3.4.5.7.8}

⇒B={7.8}

Sper ca te-am ajutat! Daca nu intelegi ceva imi scrii!