Teng emas A={1,2,3} va B={2,4,5} to‘plamlar berilgan bo‘lsa, a va b to‘plamlarning simmetrik ayirmasini toping. {1,3,4,5}

В ningAto'plamgacha to'ldiruvchisi

50.8sonini natural bo‘luvchilari nechta?

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1. 
   5 ta tovuq, 4 ta o‘rdak va 3 ta g‘oz bor. Uchta parrandani shunday tanlab olingki, ular ichida tovuq, o‘rdak va g‘oz bo‘lsin. Shunday tanlashlar soni nechta bo‘ladi?
   

x 4 25

{2,3,5} 27

2. 
   Berilgan elementar mulohazalar(o‘zgaruvchilar) yoki ularning inkorlari diz’yunksiyalaridan tashkil topgan formulaga .... deb ataladi.
   

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