Question

A={X∈NIXI30}    B={X∈N I5X-1<24}   CALCULATI SUMA ELEMENTELOR TUTUROR SUBMULTIMILOR MULTIMII B           a)AUB SI A∧B      b)aflati valoarea de adevar a propozitiei :AU(B∧C)=(AUB)∧(AUC ) SI DENUMITI PROPRIETATEA                                                                                                 

Answer 1

x∈D30
D30={1,2,3,5,10,15,30}
A={1,2,3,5,10,15,30}
5x-1<24
5x<24+1
x<25/5
x<5
x∈{0,1,2,3,4}
B={0,1,2,3,4}
a)AUB={0,1,2,4,5,10,15,30}
A∧B ={{1,2,3}ca sa raspund la pct c) din ce se compune multimea C?