Ответ:

1.

X∪Y={21,80,35,3,5,6}

X∩Y={3,5,6}

2.

A∪B={66,88,44,2,7,11,33,55}

A∩B={2,7}

3.

M∪K={9,10,7,4,2,1,8,0,5,3}

M∩K={2,1}

K∪D={2,1,8,5,0,3,4,6,12,11}

K∩D={1,3}