1003055713 | math4u.vsb.cz

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Project ID:

1003055713

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1

Clonable:

0

Easy:

1

Choose the correct expression.

{d} \cup {d} \cup {d} = {d}

{d} \cup {d} \cup {d} = {d d d}

{d} \cup {d} \cup {d} = {d; d}

{d} \cup {d} \cup {d} = {d; d; d}