Uy » Online olimpiada » Matematika olimpiada » 7-sinf Matematika olimpiada №1 Matematika olimpiada 7-sinf Matematika olimpiada №1 InfoMaster Aprel 29, 2022 2640 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 4 0 Savollar 12345678910111213141516171819202122232425 Vaqtingiz tugadi! Tomonidan yaratilgan InfoMaster 7-sinflar Matematika olimpiada №1 2019-yil bilimlar bellashuvida tushgan savollar Ismi familiyangizni kriting! Iltimos ma'lumotlaringizni to'g'ri kritishga e'tibor bering! 1 / 25 1. 1, 2, 3, 4, 5, 6 va 7 raqamlaridan, ularni takrorlamasdan nechta 4 xonali son tuzish mumkin? A) 35 ta B) 34 ta C) 33 ta D) 36 ta 2 / 25 2. Tenglamani yeching. 4,5-1,6∙(5x-3)=1,2∙(4x-1)-15,1 A) 0 B) 1 C) 3 D) 2 3 / 25 3. M ni shunday birhad bilan almashtiringki, natijada noma’lumning barcha qiymatlarida to`g`ri tenglik hosil bo`lsin: A) II B) IV C) I D) III 4 / 25 4. To`g`ri burchakli uchburchakning gipotenuzasiga tushirilgan medianasi 8 sm. Uchburchakning burchaklaridan biri 600 bo`lsa, bu burchakka yopishgan tomonlarini toping (sm). A) 7 B) 5 C) 9 D) 8 5 / 25 5. Ifodani soddalashtiring: 125a³-225a² b+135ab²-27b³ A) (5a-3b)³ B) (3a+5b)³ C) (5a)³-(3b)³ D) (3a-5b)³ 6 / 25 6. Bir ishni 10 kishi 8 kunda bajara oladi. 2 kundan so`ng, uchinchi kuni ularga yordam berish uchun bir necha kishi qo`shildi va qolgan ishni 4 kunda bajarishdi. Necha kishi kelib qo`shilgan? A) 5 B) 4 C) 3 D) 6 7 / 25 7. Ikkita parallel to`g`ri chiziqlarni to`g`ri chiziq bilan kesishishidan hosil bo`lgan mos burchaklarning yig`indisi 2100 ga teng.Bu burchaklarni toping. A) 105°; 105° B) 115°; 95° C) 80°; 130° D) 110°; 100° 8 / 25 8. To`g`ri burchakli parallelepipedning asosi tomoni c sm ga teng bo`lgan kvadratdan iborat bo`lib,balandligi d Bu parallelepipeddan qirrasi c sm bo`lgan kub qirqib olindi. Qolgan qismining hajmi V (sm3)ni hisoblash formulasini tuzing. Agar c=2,5 sm, d=4 sm bo`lsa, V ni toping. A) 75/8 B) 9 C) 81/8 D) 1/8 9 / 25 9. Umumiy AB asosga ega bo`lgan ACB va ADB uchburchaklar berilgan. CD va AB lar O nuqtada kesishadi. Agar ∠DAB= ∠CBA, ∠CAB= ∠DBA, DB=24 sm bo`lsa, CA ni toping. A) 12 sm B) 48 sm C) 24 sm D) 30 sm 10 / 25 10. Tenglamani yeching: 8x+5=119+(7-3x) A) 11 B) 1,2 C) 12 D) 1,1 11 / 25 11. Asosi BC bo`lgan teng yonli ABC uchburchakning perimetri 40 sm va teng tomonli BCD uchburchakning perimetri 45 sm ga teng. AB va BC tomonlarni toping. A) AB =12 sm; BC =16 sm; B) AB =15 sm; BC =12,5 sm; C) AB =16 sm; BC =12 sm; D) AB =12,5 sm; BC =15 sm; 12 / 25 12. Ifodani ko`paytuvchilarga ajrating: 9b²-(a-3b)² A) (6b-a)a B) (6b-a)(6b+a) C) 18b²-a²+6ab D) a² 13 / 25 13. Hisoblang: A) IV B) II C) III D) I 14 / 25 14. Uchburchakning ikki bissektrissasining kesishishidan hosil bo`lgan burchak 1280 ga teng. Uchburchakning uchinchi burchagini toping. A) 67 B) 65 C) 64 D) 66 15 / 25 15. Ifodani soddalashtiring: A) 15x⁷y¹⁰ B) 15x⁵y¹⁰ C) 15x⁶y¹⁰ D) 15x⁵y⁶ 16 / 25 16. Qo`shni burchaklar 1450 va 350 ga teng. Bu qo`shni burchaklar bissektrisalari tashkil qilgan burchakni toping. A) 70° B) 90° C) 80° D) 86° 17 / 25 17. Tenglamaning ildizi x0 bo’lsa, 18:x0 ifodaning son qiymatini toping. A) -7 B) 78/7 C) 7 D) 6 18 / 25 18. Ko’paytuvchilarga ajrating: x⁴+x²+1 A) II B) I C) IV D) III 19 / 25 19. O’lchovlari 8 va 20 ga teng bo’lgan to’g’ri to’rt burchaklardan eng kamida nechtasini birlashtirib, kvadrat hosil qilish mumkin? A) 15 B) 10 C) 11 D) 9 20 / 25 20. Agar qo`shni burchaklardan biri ikkinchisidan 450 katta bo`lsa,ularni toping . A) 111°30'; 68°30' B) 113°;67° C) 135°;45° D) 112°30'; 67°30' 21 / 25 21. Agar a=-8,3 bo`lsa, 0,6a+0,4∙(a-5,5) ifodaning qiymatini toping. A) – 10,5 B) 10,5 C) – 1,05 D) 1,05 22 / 25 22. Sonni standart ko`rinishda yozing: 1247800000 A) I B) III C) II D) IV 23 / 25 23. Uchburchakning ikkita uchidagi tashqi burchaklari o`zaro teng va perimetri 74 sm, uning bir tomoni 16 sm ga teng. Ikkita qolgan tomonlarini toping. A) 29, 30 B) 31, 29 C) 29, 29 D) 27, 32 24 / 25 24. ABC uchburchakning AD medianasi BC tomondan keyin DE= AD bo`lgan kesmaga davom ettirilib, E nuqta B nuqta bilan tutashtirildi.Agar ∠ACD=450, ∠ABD=350 bo`lsa, ∠ABE ni toping. A) 75° B) 70° C) 80° D) 10° 25 / 25 25. Soddalashtiring: 5b-(6b-a)-(a-6b) A) 5b+2a B) 17b-2a C) 5b D) 5b-2a 0% Testni qayta ishga tushiring Author: InfoMaster Foydali bo'lsa mamnunmiz
