Uy » Online olimpiada » Matematika olimpiada » 9-sinf Matematika olimpiada №1 Matematika olimpiadaTuman 2020-2021 o'quv yili 9-sinf Matematika olimpiada №1 InfoMaster Avgust 23, 2024 9 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 0 0 123456789101112131415161718192021222324 Vaqtingiz tugadi! 9-sinf Matematika olimpiada №1 2020-2021 o'quv yil tuman bosqichida tushgan savollar 1 / 24 1. Rombning diagonallari 6 va 8 ga teng bo‘lsa, uning tomonini toping. A) 6 B) 8 C) 5 D) 3 2 / 24 2. 600 li burchakka bir-biriga tashqaridan urinuvchi ikkita aylana ichki chizilgan. Kichik aylananing radiusi ga teng. Katta aylananing radiusini toping. A) 5r B) 3r C) 4r D) 2r 3 / 24 3. Yuzi 96 sm2, balandliklari 6 sm va 8 sm bo‘lgan parallelogrammning perimetrini toping. A) 56 sm B) 20 sm C) 50 sm D) 40 sm 4 / 24 4. To‘g‘ri burchakli uchburchakka ichki chizilgan aylana urinish nuqtasida gipotenuzani 5 va 12 ga teng kesmalarga ajratadi. Uchburchak yuzini toping A) 35 B) 60 C) 48 D) 65 5 / 24 5. Agar bo‘lsa, ni hisoblang. A) ±4 B) -4 C) 3 D) 4 6 / 24 6. Tenglamaning natural sonlardagi yechimida ni toping: A) 5 B) 3 C) 2 D) 4 7 / 24 7. Tenglamani yeching: |x+6|=|x+10| A) -6 B) -8 C) 4 D) 6 8 / 24 8. 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) To‘g‘ri burchakli C) Bunday uchburchak yo’q D) O’tkir burchakli 9 / 24 9. Geometrik progressiyada dastlabki to‘rtta hadlari mos ravishda 6; 24; 96; bo‘lsa, ni toping. A) 22 B) 16 C) 15 D) 14 10 / 24 10. Parallellogrammning 5 ga teng bo‘lgan diagonali uning 12 ga teng bo‘lgan tomoniga perpendikulyar. Parallelogrammning perimetrini toping. A) 48 B) 34 C) 44 D) 50 11 / 24 11. Ifodaning eng kichik qiymatini toping: A) 4 B) -4 C) -12 D) 12 12 / 24 12. Asoslari 18 va 12 ga teng bo‘lgan teng yonli trapetsiyaning diagonallari o‘zaro perpendikulyar. Trapetsiyaning yuzini toping A) 400 B) 125 C) 225 D) 150 13 / 24 13. ni hisoblang. A) -2 B) 3 C) 4 D) 2 14 / 24 14. stemadan ni toping. A) 3/7 B) 7/3 C) 11/7 D) 7/11 15 / 24 15. Hisoblang: A) 1,5 B) 1 C) 0,5 D) 5 16 / 24 16. Tarkibida 85% suv bo‘lgan 0,5 t sellyuloza qorishmasida 75% suv bo‘lgan qorishma olish uchun necha kg suvni bug‘lantirish kerak? A) 300 B) 100 C) 400 D) 200 17 / 24 17. ifodani a=4, b=5 bo‘lgandagi qiymatini toping. A) -1 B) 1 C) 0 D) 2 18 / 24 18. Teng yonli trapetsiyaning diagonali uni ikkita teng yonli uchburchakka ajratadi. Trapetsiyaning burchaklarini toping. 1. 2. 3. 4. A) 1 B) 3 C) 2 D) 4 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 C) 2,5 D) 3 20 / 24 20. Agar (3-a)(3-b)(3-c)=(3+a)(3+b)(3+c) bo‘lsa, ni hisoblang. (Bunda ). A) -1/3 B) 1/27 C) 1/9 D) -1/9 21 / 24 21. P(x) ko‘phadni x-a ga bo‘lgandagi qoldiqni toping. A) P(x-a) B) P(x) C) 0 D) P(a) 22 / 24 22. bo‘lsa, ifodaning qiymatini toping A) 3/16 B) 2/3 C) 13/16 D) 15/16 23 / 24 23. 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) 30 C) 34 D) 38 24 / 24 24. Agar bo‘lsa, ko‘paytmani hisoblang. A) 1/35 B) 31/35 C) -1 D) 1/33 0% Testni qayta ishga tushiring Tomonidan Wordpress Quiz plugin Author: InfoMaster Foydali bo'lsa mamnunmiz