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