Oraliq va yakuniy nazorat savollari To’plam elementlari deb nimaga aytiladi?

D)

31. Yashikda 25 ta shar bor, ulardan 10 tasi ok 15 tasi qora. Yashikdan tavakkal bitta shar olinganda uning oq bo’lish ehtimolini toping?

A) 0.5

B) 0.2

C) 0.3

D)** 0.4

32. Qutida 5 ta oq, 4 ta qizil shar bor. Qutidan qaytarib joyiga qo’ymasdan, bittalab shar olish tajribasi o’tkazilayotgan bo’lsin. Birinchi gal oq, ikkinchi gal qizil chiqish ehtimolini toping?

A) 19/81

B) 21/81

C)**20/81

D) 22/81

33. A={1,3,5} va B={3,11,13,15} to’plamlar uchun A\B ni toping.

A) **A\B={1,5}

B) A\B={3}

C) A\B={1,11,15}

D) A\B={1,3,5,11,13}

34. Agar A to’plamning xar bir elementi V to’plamda mavjud bo’lsa?

A) VA

B)** AV

C) A=V

D) AV

36. Xodisa ehtimolining geometrik ta’rifini ifodalovchi formulani ko’rsating?