Uy » Online olimpiada » Matematika olimpiada » 11-sinf Matematika olimpiada №4 Matematika olimpiadaTuman 2022-2023 o'quv yili 11-sinf Matematika olimpiada №4 InfoMaster Avgust 19, 2024 71 Ko'rishlar 2 izohlar SaqlashSaqlanganOlib tashlandi 0 4 123456789101112131415161718192021222324252627282930 Vaqtingiz tugadi! 11-sinf Matematika olimpiada №4 2022-yil 12-oktyabr: 2022-2023 o'quv yilida tuman bosqichida tushgan savollar! 1 / 30 1. 750 ning oxirgi ikkita raqamini toping. A) 51 B) 25 C) 35 D) 49 2 / 30 2. Tenglamani yeching: A) π −arcctg4+πk; k∈Z B) πk; −arcctg4+πk; k∈Z C) arccos0,8+2πk; k∈Z D) πk; π−arcctg4+πk; k∈Z 3 / 30 3. Poyezd 3 minutda 7 kilometrmasofani , motosikl 5 minutda 7 kilometrmasofanibosibo`tdi. Mototsikltezligipoyezdtezliginingnecha % initashkilqiladi? A) 60% B) 71% C) 70% D) 61% 4 / 30 4. Aylananing ОА, ОВ, ОС radiuslari o‘tkazilgan. Agar bo‘lsa, АОВ burchakni toping. A) 30° B) 60° C) 90° D) 120° 5 / 30 5. Agar ?(?) = ?2021 + 3?2020 + 3?2019 − ?2018 + 1 bo‘lsa, ni toping. A) 1 B) 2 C) 3 D) 0 6 / 30 6. Nargizada 2 ta olma va 3 ta nok bor. U 5 kun ketma-ket har kuni singliga bittadan meva beradi. Bu ishni necha usul bilan amalga oshirish mumkin? A) 6 B) 12 C) 10 D) 8 7 / 30 7. (3 − cos²x− 2sinx)(lg²y+ 2lgy+ 4) ≤ 3 bo‘lsa, sin²x+ 20y+ 1 ni toping. A) 4 B) 2 C) 3 D) 5 8 / 30 8. Raqamlari yig‘indisi 10 dan kam bo‘lmagan, raqamlari ko‘paytmasi esa 10 dan katta bo‘lmagan uch xonali sonlar nechta? A) 100 B) 106 C) 96 D) 89 9 / 30 9. Agar bo‘lsa sin²α ni toping. A) A B) D C) C D) B 10 / 30 10. y = x² − 2x + 3 parabolaga y = 3 to‘g‘ri chiziqqa nisbatan simmetrik bo‘lgan parabola tenglamasini tuzing. A) y = -x² − 2x + 3 B) y = x² − 2x - 3 C) y =-x² + 2x + 3 D) y =-x² + 2x - 3 11 / 30 11. BC = BE = CD ,∠DAE = 20°, ∠BCD = 60° ,∠ADE = ? (chizmaga qarang) A) 20° B) 30° C) 40° D) 50° 12 / 30 12. a2b5 = 620 tenglikni qanoatlantiruvchi nechta (?; ?) butun sonlar juftligi mavjud? A) 14 B) 8 C) 10 D) 12 13 / 30 13. Agar ifodaning qiymatini toping. A) 4 B) 0.8 C) 0.05 D) 20 14 / 30 14. O‘tkir burchakli uchburchakning ikki tomon uzunliklari ayirmasi 8, bu tomonlarning uchinchi tomondagi proyeksiyalari mos ravishda 8 va 20 ga teng. Berilgan uchburchakka tashqi chizilgan aylana radiusini toping. A) 85/6 B) 35/3 C) 83/6 D) 37/3 15 / 30 15. Tengsizliklar sistemasinining butun yechimlari sonini toping. A) 4 B) 6 C) 5 D) 7 16 / 30 16. un ketma-ketlik quyidagicha berilgan: u1 = 1, un+1 = un + 8n. U holda, u50 −u30 ni toping. A) 6320 B) 6320 C) 6230 D) 5320 17 / 30 17. Doskaga ?1, ?2, ?3, . . . , ?200 sonlari yozilgan. Ma’lumki, ?1 = 3, ?2 = 9. Agar ixtiyoriy n natural son uchun ?n+2 = ?n+1 − ?n tenglik o‘rinli bo‘lsa, ?200 ni toping. A) 3 B) 6 C) 8 D) 9 18 / 30 18. Tenglamani yeching: A) 29/462 B) ∅ C) 10/21 D) 0 19 / 30 19. bo’lsa, P(−1) ni toping. A) 115 B) 105 C) 100 D) 120 20 / 30 20. ?(3) ∙ (? − 2) + ?(? − 1) = 3? bo‘lsa, ?(1) ni toping. A) 4 B) 3 C) 2 D) 6 21 / 30 21. formula bilan berilgan sonli ketma-ketlikning dastlabki 20 ta hadining o‘rta arifmetigini toping. A) 25/6 B) 22/3 C) 23/6 D) 20/3 22 / 30 22. Natural son roppa-rosa 2 ta tub bo‘luvchiga, bu sonning kvadrati esa 45 ta turli natural bo‘luvchiga ega. Berilgan sonning kubi eng ko‘pi bilan nechta natural bo‘luvchiga ega bo‘lishi mumkin? A) 40 B) 41 C) 81 D) 91 23 / 30 23. ABC uchburchakda ctgA+ctgB= 3 va AB= 12 bo‘lsa, ABC uchburchak yuzini toping. A) 123 B) 216 C) 265 D) 521 24 / 30 24. ABCD - kvadrat, AC-diagonal. Agar AE=BE+CE ( a + b = c ) bo‘lsa, ∠AEB burchakni toping(chizmaga qarang!). A) 50 B) 45 C) 60 D) 55 25 / 30 25. Uchlari A(2; −3), B(6; −1), C(6; 4) va D(2; 2) nuqtalarda bo‘lgan ABCD to‘rtburchak yuzini toping. A) 18 B) 15 C) 16 D) 20 26 / 30 26. Muntazam uchburchak 36 ta yuzi 1 ga teng bo‘lgan kichkina muntazam uchburchaklardan iborat (chizmaga qarang!). ABC uchburchak yuzini toping. A) 10 B) 11 C) 12 D) 13 27 / 30 27. Hisoblang: A) A B) C C) B D) D 28 / 30 28. ? soniga teskari bo‘lgan son ? ning 9% ini tashkil qiladi. ? ni toping. (?u yerda, ? > 0) A) 13/3 B) 8/3 C) 16/3 D) 10/3 29 / 30 29. Soddalashtiring: bunda, |?| < 1. A) 2-2a B) 2a+4 C) 4-2a D) -2 30 / 30 30. To‘g‘ri burchakli uchburchakning bir burchagi 60° ga teng. Bu burchakdan chiqarilgan bissektrisaning uzunligi 2 m. Uchburchakning gipotenuzasi uzunligini toping. A) √3 B) 2√3 C) √5 D) √5 +1 0% Tomonidan Wordpress Quiz plugin Author: InfoMaster Foydali bo'lsa mamnunmiz