2015-yilning variantlari Matematika (Informatika) javoblari bilan

Variant №127
1.O ’ndan katta bo’lmagan barcha natural sonlar ko’paytmasining natural bo’luvchilari sonini toping.
A ) 275 B ) 280 C)270 D)260
2. tengsizlikni yeching.
A) (-2;2) B ) (0; 2] C) [-2: 2] D )(0;2)
3. ni hisoblang
A) 12 B ) 8 C) 4 D) 6
4. ifodani soddalashtiring (a>0, b> 0).
A) 0 B) a-b C ) D)1
5. 71¹⁶+7¹⁴ yigindi qiymatining natural bo'luvchilari sonini toping.
A ) 100 B ) 90 C)30 D) 255
6. . ifodani soddalashtiring.
A)5 B) C) 1 D)3
7 .ABC uchburchak O-markazli aylanaga ichki chizilgan.
Agar A) 40° B) 100° C)60° D) 50°
8. |2-x|+3x≤5 tengsizlikni yeching.
A) x≤3/2 B)x≥2 C) x≤-1 D) x≥3
9. Aylananing A.B, va C nuqtalari unu 15:4:5 nisbatda yoylarga bo’ladi. A, B.va C nuqtalardan urinmalar o'tkazilib. bir-biri bilan kesushguncha davom ettirildi. Hosil bo’lgan uchburchakning burchaklarini toping.
A) 45°. 125°, 10° B) 105°,30°,45° C) 30°.30°. 120° D) 60°,4 5°,75°
10. Teng yonli trapetsiyaning o’tmas burchagi uchidan tushirilgan balandlik katta asosni 3 dm va 6 sm li kesmalarga ajratsa. trapetsiyaning kichik asosini toping.
A) 2,4 sm B ) 2,7 dm C) 3 sm D) 2,4 dm
11. 324; 255 va 71 sonlarining har birini qanday natural songa bo’lganda bir xil bo’ladi?
A) 25 B) 27 0 23 D) 29
1 2. Rasmada ifodalanganidek OD va CE kesmalar AB diametrgi perpendikulyar bo’lib, AO=2CE bo’lsa, S_ACB :S_ADB nisbatini toping.

A ) 1:4 B ) 1:2 C) 3:2 D) 2:1

13. Agar x_n ketma-ketlik uchun x_n=x_n-1-x_n-2, n≥3 x₂=2, x₁= 2 bo’lsa, x₅ ni toping,
A) 2 B ) 5 0 - 2 D) -5
14 ABC to’gri burchakli uchburchakda C to'gri burchak. BC=15. AC=8 uning B burchagi sinusi va tangenisi nisbatini toping.
A)17/15 B) 8/17 C) 15/17 D) 8/15
15. Teng yonli trapetsiyaning asofilari 4 va 12 bo'lsa. unga ichki chizilgan doira vuzini toping.
A) 18π B) 8 π C) 16 π D) 12π
16. bo’lsa, a ning qiymatini toping.
A ) 6 B ) 10 C)30 D ) 15
17. f(x)=(2x-7)² funksiyaning hosilasini toping.
A) 8x+28 B ) 4x-14 C)4x-28 D)8x-28
18 Katetlari tenglama ildizlariga teng bo'lgan to'g'ri burchakli uchburchakning yuzini toping.
A) 5 B) 4 C )1, 5 D) 2
19. bo’lsa, funksiya uchun f(a)=0 bo’lsa a ni toping.
A) 0 va 3 B ) -5 C) 0 D )0 v a -5
20. sin⁴ x+cos⁴x=1 tenglamani yeching.
A) B) C)
21. tengsizlikni yeching.
A) (8 ; ∞) B) (-∞;∞) C) (-∞;0) U (6 ;∞) D) (-∞;0] U ( 8 ; ∞)
22. Diognallarining soni tomonlari sonidan marta ko'b bo'lgan qavariq muntazam ko’pburchakning barcha ichki burchaklari va bitti tashqi burchagi yig’indisini toping.
A) 1220° B) 1340° C)1300° D) 500°
23. f(x) = (2x-4)⁷ funksivaning hosilasini toping.
A) -14(4-2x) ⁶ B) -14(4+2x)⁶ C) 14(4+2x)⁶ D) 14(4-2x) ⁶
24. Agar x²-3x-6=0 tenglamaning ildizlari x₁ va x₂ bo’lsa ni toping
A)1/3 B) -0,375 C) 0,5 D) -0,5
25. Agar xy+yz+zx=16 bo’lsa, x²+y²+z² ning eng kichik qiymatini toping.
A) 18 B ) 32 C ) 16 D ) 24
26. AB kesma 1 to’g’ri chiziqni O nuqtaga kesadi. L to’g’ri chiziqqa AA₁ va BB₁ perpendikular tushirilgan. Agar AA₁=6 sm, OA₁=8sm va OB₁=4 sm bo’lsa, AB kesmaning uzunligini toping.
A) 9 B) 12 C)16 D) 15
27. Tenglamani yeching:
A) B) C) D)
28. Toq funksiyani ko'rsating.
A) B)y=xcosx C) D)
29. ni hisoblang
A)8 B) 5 C) 6 D) 10
30. Amallami bajaring:
A) B ) C) D )
31. 2 Mbayt necha baytga teng.
A) 2¹⁰ bayt B ) 2²¹ bayt C) 2 ²⁰ bayt D )2¹⁰ bayt
32. Barcha a,b∈R uchun mantiqiy ifoda qiymatini aniqlang.

A) Sodda mulohazalardan ba’zilarini qiymatini aniqlab bo’lmaydi B) Rost C) Mantiqiy ifoda xato yozilgan D) yolg’on
33. Windovs operatsiyon tizitii (sistema) da papka va hujjatlarni vertikal ustun shaklida tartiblash va ularni kichik ikonkalar tarzida kodlash usuli qaysi javobda to’g'ri ko'rsatilgan?
A) Плитка B) Список C) Значок D) Таблица
34. MS Excel 2003 dasturida A1 katakda 8, A2 katakda 7, A3 katakda 6 qiymati berilgan bo’lsa, =ПРОИЗВЕД(A1:A3) formula bo’yicha A4 katakda qanday natija hosil bo’ladi?
A) 338 B ) 335 C) 336 D) 48
35. HTML- huyatda matnni qftlin shirift ko'rinishda yozish uchun uni qaysi HTML teglar orasida olish zarur
A) ... B)... C)... D)
..

36. Paskal tilida ketma-ketlik korinishida yozilgan quyidagi imassiv elementlari sonini aniqlang:

S[10,5], S[10,4),S[10,3], S[9,5].....S[5,3] .
A) 18 B) 4 C) 9 D) 15