abronxtale02
01.09.2020 •
Mathematics
Help me answer this, thank you
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Ответ:
4
Step-by-step explanation:
P={1,2,3,4,5,6}
Q={3,4,5,6,7,8,9}
PnQ={3,4,5,6}
Therefore, n(PnQ) =4
Ответ: