Ning qismini toping. A 45 b 40 c 35 d 60 12

11. 72 ning qismini toping. A) 45 B) 40 C) 35 D) 60 12. tenglamalar sistemasini yecching; A) (8; 1) B) (-1; 6) C) (6; -1) D) (-1; -8) 13. Hisoblang; A) 0 B) 1 C) 2 D) 4 14. To`rtburchakning tomolari 2:5:4:3 nisbatda bo`lsa uning uzun tomoni qancha. Peremetri 112 ga teng. A) 20 B) 28 C) 35 D) 40 15. 49 ning 50 % ni qismini hisoblang; A) 14 B) 7 C) 28 D) 21 16. Toq tepasiga 6 xil yo`l bilan borish mumkin bo`lib, faqat brogan yo`l bilan qaytish mumkin bo`lsa toq tepasiga necha xil usulda borib qaytish mumkin. A) 6 B) 30 C) 12 D) 36 17. Qoplangan har bir un qopining og`irligi 1,5 kg bo`lsa 45 kg unni qoplash uchun qancha qop kerak bo`ladi. A) 15 B) 20 C) 25 D) 30 18. 15 va 24 sonlarining EKUK ni toping; A) 3 B) 60 C) 120 D) 180 19. Hisoblang; A) 21 B) 30 C) 90 D) 60 20. Kubning yuzasini ifodalovchi formulani ko`rsating; A) B) C) D)