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On définit les ensembles $A$, $B$ et $C$ suivants :

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$ A =  \\{ \\var{a}, \\var{b}, \\var{c}, \\var{f} \\}$

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$ B = \\{  \\var{c}, \\var{d}, \\var{f} \\}$

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$ C= \\{ \\var{c}, \\var{g} \\}$

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Understanding of intersection and union symbols.

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Donner les nombres qui appartiennent à $A \\cap B$.

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{a}

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{b}

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{c}

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{d}

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{f}

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{g}

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Donnez les nombres qui sont dans $B \\cup C$.

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{a}

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{b}

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{c}

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{d}

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{f}

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{g}

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$A \\cap B$ is read as $A$ intersection $B$ and indicates the elements that are in both set $A$ and set $B$.

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$B \\cup C$ is read as $B$ union $C$ and indicates the elements that are either in $B$ or in $C$ or in both.

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For more explanation, look for relevant resources in the Maths for Computing section of our Maths Study Skills page.

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