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special-edu.kz.
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AB = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}; special-edu.kz.

n( AB ) = 10.

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1056. 3) 2,3; 5) 8; 6) 3.

1057. 2) n(AB ) = 2; 3) n(AB ) = 6.

1060. n(C 
D) = 9;
435 271
1061. ×èñëî ðåáåð ãðàôà – .
2

Ýòî íå öåëîå ÷èñëî. Çíà÷èò, ñîåäè-

íèòü òåëåôîíû òðåáóåìûì îáðàçîì
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íåâîçìîæíî.

1062. 28,8 êì/÷.

1065. F 
K = {12; 24}; ÍÎK(4; 6) = 12.

1067. 3) BC = {à, â, d, ñ, y};

1068. 2.

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5.4. Çàäà÷è íà ìíîæåñòâà

Çàäà÷à. Èç ó÷àñòíèêîâ ìàòåìàòè÷å-

ñêîé îëèìïèàäû äëÿ 5 êëàññà 38 ó÷åíè-

êîâ ðåøèëè àðèôìåòè÷åñêóþ çàäà÷ó, à

ãåîìåòðè÷åñêóþ – 25. Èç íèõ 20 ó÷åíè-

97
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