Question

A={0,1,2,3,4,5,6,7,8}
B={3,6,9,12,15,18,21}
C={5,8,13,17,21,25}​

Answer 1

Răspuns:

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

Answer 2

Răspuns:

Explicație pas cu pas:

A={0,1,2,3,4,5,6,7,8}

B={3,6,9,12,15,18,21}

C={5,8,13,17,21,25}​

A∪B∩∅=?

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

∅= multimea vida, adica nu are niciun element.

Intersectia a doua multimi inseamna sa scriem elementele care sunt comune celor doua multimi. Multimea vida nu are elemente si este inclusa in orice alta multime   ⇒

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

Raspuns: ∅