9-sinf Matematika olimpiada №1 Sentabr 21, 2022Avgust 23, 2024 da chop etilgan InfoMaster tomonidan 9-sinf Matematika olimpiada №1 ga fikr bildirilmagan. 1 123456789101112131415161718192021222324 Vaqtingiz tugadi! Tomonidan yaratilgan InfoMaster 9-sinf Matematika olimpiada №1 2020-2021 o'quv yil tuman bosqichida tushgan savollar 1 / 24 1. Asoslari 18 va 12 ga teng bo‘lgan teng yonli trapetsiyaning diagonallari o‘zaro perpendikulyar. Trapetsiyaning yuzini toping A) 150 B) 225 C) 400 D) 125 2 / 24 2. Tenglamani yeching: |x+6|=|x+10| A) 4 B) 6 C) -8 D) -6 3 / 24 3. Uchburchakning perimetri 24 sm ga teng bo‘lib, uning tomonlari uzunliklari arifmetik progressiya tashkil etadi. Shu uchburchakning kichik tomoni 6 sm bo‘lsa, uchburchak turini aniqlang. A) O’tmas burchakli B) Bunday uchburchak yo’q C) To‘g‘ri burchakli D) O’tkir burchakli 4 / 24 4. Hisoblang: A) 1,5 B) 5 C) 1 D) 0,5 5 / 24 5. Agar bo‘lsa, ni hisoblang. A) ±4 B) 3 C) -4 D) 4 6 / 24 6. Teng yonli trapetsiyaning diagonali uni ikkita teng yonli uchburchakka ajratadi. Trapetsiyaning burchaklarini toping. 1. 2. 3. 4. A) 4 B) 2 C) 1 D) 3 7 / 24 7. P(x) ko‘phadni x-a ga bo‘lgandagi qoldiqni toping. A) P(x-a) B) 0 C) P(a) D) P(x) 8 / 24 8. bo‘lsa, ifodaning qiymatini toping A) 13/16 B) 2/3 C) 15/16 D) 3/16 9 / 24 9. Abituriyentga 36 ta masala berildi. To‘g‘ri yechilgan har biriga 3 ball beriladi. Noto‘g‘risiga 2 ball chegiriladi. 88 ball to‘plashi uchun o‘quvchi nechta masalani to‘g‘ri yechishi kerak? A) 32 B) 34 C) 38 D) 30 10 / 24 10. ifodani a=4, b=5 bo‘lgandagi qiymatini toping. A) -1 B) 1 C) 0 D) 2 11 / 24 11. Tenglamaning natural sonlardagi yechimida ni toping: A) 3 B) 5 C) 4 D) 2 12 / 24 12. Agar (3-a)(3-b)(3-c)=(3+a)(3+b)(3+c) bo‘lsa, ni hisoblang. (Bunda ). A) 1/9 B) -1/9 C) 1/27 D) -1/3 13 / 24 13. Agar bo‘lsa, ko‘paytmani hisoblang. A) 1/33 B) 31/35 C) -1 D) 1/35 14 / 24 14. ni hisoblang. A) 4 B) 3 C) -2 D) 2 15 / 24 15. stemadan ni toping. A) 11/7 B) 7/11 C) 7/3 D) 3/7 16 / 24 16. Ifodaning eng kichik qiymatini toping: A) 4 B) 12 C) -12 D) -4 17 / 24 17. Yuzi 96 sm2, balandliklari 6 sm va 8 sm bo‘lgan parallelogrammning perimetrini toping. A) 56 sm B) 40 sm C) 50 sm D) 20 sm 18 / 24 18. Tarkibida 85% suv bo‘lgan 0,5 t sellyuloza qorishmasida 75% suv bo‘lgan qorishma olish uchun necha kg suvni bug‘lantirish kerak? A) 400 B) 300 C) 100 D) 200 19 / 24 19. Hovuzga uchta quvur o‘tkazilgan. Birinchisi hovuzni 12 soatda, ikkinchisi 8 soatda to‘ldiradi. Uchinchisi hovuzni 1 sutkada bo‘shatadi. Agar uchala quvur birgalikda ochib qo‘yilsa, bo‘sh hovuzning yarmi qancha vaqt(soat)da to‘ladi? A) 1,5 B) 2,5 C) 3 D) 2 20 / 24 20. To‘g‘ri burchakli uchburchakka ichki chizilgan aylana urinish nuqtasida gipotenuzani 5 va 12 ga teng kesmalarga ajratadi. Uchburchak yuzini toping A) 65 B) 48 C) 35 D) 60 21 / 24 21. Parallellogrammning 5 ga teng bo‘lgan diagonali uning 12 ga teng bo‘lgan tomoniga perpendikulyar. Parallelogrammning perimetrini toping. A) 50 B) 48 C) 34 D) 44 22 / 24 22. Geometrik progressiyada dastlabki to‘rtta hadlari mos ravishda 6; 24; 96; bo‘lsa, ni toping. A) 22 B) 15 C) 14 D) 16 23 / 24 23. 600 li burchakka bir-biriga tashqaridan urinuvchi ikkita aylana ichki chizilgan. Kichik aylananing radiusi ga teng. Katta aylananing radiusini toping. A) 5r B) 4r C) 2r D) 3r 24 / 24 24. Rombning diagonallari 6 va 8 ga teng bo‘lsa, uning tomonini toping. A) 6 B) 5 C) 3 D) 8 0% Testni qayta ishga tushiring tomonidan Wordpress Quiz plugin Matematika olimpiada, Tuman 2020-2021 o'quv yili
