2015-yilning variantlari Matematika (Informatika) javoblari bilan

VARIANT № 108
1. ni hisoblang.
A ) -4 B ) -5 C) -3 D) -6
2. tengsizlikning [0 ;π] kesmada nechta ildizi bor?
A) 1 ta B ) 4 ta C) 3 ta D) 5 ta
3. Qo’shni burchaklaridan biri ikkinchisining 80% ga teng bo'lsa, shu burchaklardan kattasini toping.
A) 95° B ) 80° C)90° D) 100°
4. yengsizlikni yeching.
A) B) C) D) ∅
5. Teng yonli uchburchakning uchidagi burchagi a ga teng. Uchburchakka ichki va tashqi chizilgan doiralar radiuslari nisbatini toping.
A) B) C) D)
6 . XOY dekart koordinatalar tekisligi A(3;2), B(1;3), M (2;1) va N(z; -1)nuqtalar berilgan bo’lib, ulardan tuzilgan va vektorlarning uzunliklari teng bo’lsa, qanday qiymat qabul qiladi?
A) 5 B) 3 C)6 D) 1 yoki 3
7. Ordinatasi y₀=-2 bo'lgan nuqtada y=1-4x+x² egri chiziqda urinuvchi to'g’ri chiziq tenglamasini ko'rsating.
A) y=2x B ) y=-2x va y=2x-8 C) y=2x va y=8-2x D) y=8-2x
8. Radiuslari r=l va R=3 sm bo'lgan aylanalar tashqi ravishda urinadi. Aylanalar urinish nuqtasidan ularning umumiy urinmalarigacha bo'lgan masofani (sm) toping.
A) 4/5 B ) 3/2 C)2/3 D) 5/6
9. P(x- 3) + P(x + 1) = 2x² -10x+16 bo'lsa. P(x) ni topng.
A) B) C) D)
10. tenglamani yeching.
A) 4 B) 8 C) 3 D) 40
11. y=3sin5x+sin15x funksiyaning hosilasini toping
A) 30cos5xcos10x B) 30sin5x-cos10x C) -30cos5x- sin10x D) 30sin5x-sin10x
12. tenglamaning yechimiga teskari sonni toping.
A -1/2 B ) 2 C) ½ D) 1
13. Amallami bajaring:
A) B ) C) D )
14. Teng yonli trapetsiyaning diagonallari o'zaro perpendikulyar hamda yuzi 32 ga teng bo'lsa, uning diagonali uzunligini toping.
A) 6 B) 8 C) 4√2 D) 4
15. bo'lsa, ko’paytmani hisoblang.
A) -2 B) 1 C) 3 D) 2
16. a ning qanday qiymatida tenglamalar sistemasi yechimga ega?
A) 0 B )3 C)1 D) 2
17. Teng yonli uchburchakning yon tomoniga tushirilgan mediannasi 5sm, asosi 4√2 sm bo’la, uchburchakning yon tomoni (sm) toping
A)7 B ) 6 C) 4√2 D ) 5
18. 2013²⁰¹⁵ ni 10 ga bo’lgandagi qoldiqni toping.
A) 7 B) 9 C)1 D) 3
19. . bo’lsa b ni hisoblang
A) 17 B)134 C)50 D) 25
20. ni hisoblang
A)10 B) 6 C )8 D) 5
21. 18 dan kichik natural sonlar ichidan eng ko’p natural bo’luvchiga ega bo'lganini toping ,
A ) 15 B ) 14 C ) 12 D ) 16
22. Rombning diagonallari 6 va 4 ga teng bo'lsa, uning yuzini toping.
A) 16 B ) 10 C) 24 D) 12
23. Arifmetik progressiyada va bo'lsa, shu o'suvch arifmetik progressiyad a₄ ni toping.
A ) -14 B) 49 C)- 49 D) 14
24. |2-x|+3x<5 tengsizlikni yeching.
A) B ) C) D)
25. ni hisoblang.
A) 4 B) 8 C)6 D) 12
26. Bankka 50000 so'm pul qo'yildi. Bir yildan song jamg'arma p% ga ko’paydi. Jamgarmaning miqdori necha so'mga yetdi?
A) 50000(p+100) B) 50000+100p C) 500(p+100) D) 50000p
27. tengsizlikni yeching.
A) (-∞;0) U (6 ;∞) B) (-∞;0] U ( 8 ; ∞) C) (8 ; ∞) D) (-∞;∞)
28. hisoblang.
A) 17/13 B) 13/17 C) 19/13 D) 13/15
29. sistemani yeching
A) B)
C) D)
30. Ikkita qarama-qarshi tomonlari yig’indisi 45 sm bo'lgan to’rtburchakka aylana ichki chizilgan. Qolgan ikkita tomoni 2:3 kabi nisbatda bo'lsa, bu tomonlardan kattasini toping (sm).
A) 26 B ) 29 C) 27 D)28
31. Ikkilikda aks etgan quyidagi axborot necha bayt? 1011101000111010
A) 8 B ) 2 C )4 D) 16
32. Quyida mantiqiy tenglamaning yechimlari sonini aniqlang:
A) 2 B ) 1 C) 3 D) 4
33.Kompyuterga dasturiy ta'minotini o'rnatish jarayoni... deyiladi.
A) deinstallyatsiya B) installyatsiya C) defragmentatsiya D) arxivlash
34. Amaliy dasturlar ta’minotida kiruvchu dasturlar qaysi javobda to’g’ri ko'rsatilgan?
A) Paskal, Basic, Delphi,C++, MS DOS
B) ma’lumotlar omborini boshqarish tizimlari, operatsion tizimlar, ma’lumotlar ombori, dasturiy ta'minot
C) matn muxarirlari nashriyot tizimlari, jadval protsessorlsri. ma’lumotlar omborini boshqarish tizimlari, grafik muxarrirlari
D) grafik muxarrirlari, ofis daturlari,global tarmoq, matn muxarirlari
35. 16 bitda kodlash mumkin bo' Igan eng katta natural son:
A) 255 B ) 65535 C)32768 D)256
36. Paskal tilida quyidgi dastur bajarilishi natijasidaekranda chiqariladigan axborotni aniqlang:
Label a;
Var k,b,c:string[6];
Begin K:=20; B:=14; goto a;
C:=01.08; write(C:2); a: write(K:1,B:2); end
A)2014 B) 214 C)01.08 D) 01.08.2014