Luisa057ask
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Se considera multimea A={0,2,4,6,....,50} si B={0,3,6,9,...48}. Determinati cardinalul fiecarei multimi A, B, AnB si AuB

Răspuns :

8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50

12,15,18,21,24,27,30,33,36,39,42,45

|A| = 26

|B|=17

|AuB|=|A|+|B|-|AnB|

|AnB|=9

|AuB|=26+17-9

|AuB|=43-9=24

Arimathask

Răspuns:

|AnB|=9

|AuB|=24

|A| = 26

|B|=17

Explicație pas cu pas:

|A| = 26

|B|=17

|AuB|=|A|+|B|-|AnB|

|AnB|=9

|AuB|=26+17-9

|AuB|=43-9

|AuB|=24

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