15-qadamdagi sonni toping: 1 → 3 → 5 → 7 → 9 29 30 28 31 Javobni ko'rsatish 📝 Batafsil tushuntirish Bu arifmetik progressiya bo'lib, birinchi hadi 1 ga, ayirmasi esa 2 ga teng. 15-hadi: 1 + 14 × 2 = 1 + 28 = 29.
