Quyidagi mulohazalardan qaysilari hamma vaqt o'rinli bo'ladi? a: "(13; 17) sonlari egzak tub sonlar", b: "Barcha tomonlari teng bo'lgan parallelogramm romb deyiladi", c: "5! = 120 ga teng"

  1. faqat c
  2. a va b
  3. b va c
  4. barcha mulohazalar

📝 Detailed explanation

a mulohaza noto'g'ri, chunki egzak tub sonlar ayirmasi 2 ga teng bo'lishi kerak (masalan, 11 va 13). b mulohaza rombning to'g'ri ta'rifi, c mulohazada esa 5! = 5 × 4 × 3 × 2 × 1 = 120 bo'lgani uchun ikkalasi har doim o'rinlidir.
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