2015-yilning variantlari Matematika (Informatika) javoblari bilan



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2015-yilning variantlari Matematika (Informatika) javoblari bila

VARIANT № 120
1. Natural a sonni b ga bo'lganda bo'linma с ga va qoldiq d ga bo’ldi. Agar bo’linuvchi va bo'linma ikki marta ortsa, qoldiq qanday o'zgaradi?
A) 2 marat kamayadi B ) 2 marta ortadi C ) 4 marta ortadi D) o’zgarmaydi
2. Teng yonli trapetsiyaning diognallari o'zaro perpndikulyar hamda yuzi 32 ga teng bo’lsa, uning diognali uzunligini toping.
A) 4√2 B) 4 C) 8 D) 6
3. ildizlari o'rta arifmetigini toping.
A) 1,5 B) 19/18 C) 13/12 D) 0,(6)
4 . Agar bo’lsa toping.
A) B) C) D)
5. (24-(-3)):((+6)-(-3)) ni hisoblang.
A)-7 B) 3 C) 7 D) -3
6 . soddalashtiring x>0
7 va ko’phadlar aynan teng bo’lsa, a va b
larni toping.
A) a=2; b= 4 B ) a=-2; b=4 C)a= -2; b= -4 D) a=-2; b=-4
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) 3/2 B) 2/3 C) 4/5 D) 5/6
9 Ikkita qo’shni yoqlarning markazlari orasidagi masofa √8 ga teng bo’lgan kubga tashqi chizilgan shar sirtining yuzini toping
A ) 144π B ) 120π C)108π D) 125π
10. Radiusi r bo’lgan aylananing parallel vatarlari uning radiusining 1,2 qismiga teng. vatarlar orasidagi masofani toping.
A)(7/5)r B)r C) (6/5) r D) (8/5)r
11. Teng yonli uchburchakning perimetri 52 sm. Agar uning asosi yon tomonining 0,6 qismini tashkil qilsa, unga tashqi chizilgan doira yuzini (sm2) toping.
A) B) C) D)
12. hosilasini hisoblang.
A) 8x7 + 3sin3x B) C) 8x7 -3sin3x D)
13.1 ko’paytmaning natural bo’luvchilari sonni toping.
A) 106 B)108 C) 216 D) 54
14. tenglamaning ildizlaridan biri -1 ga teng. a ni toping
A) 0 B)-4 C) 2 D ) 4
15. Agar xn ketma-ketlik uchun xn=xn-1-xn-2, n≥3 x2=2, x1= 2 bo’lsa, x5 ni toping,
A ) -2 B ) 2 C )5 D)-5
16. x ning qanday qiymatlarida |44 + 2x2 -26x| = (-26x-44-2x2) o'rinli bo’ladi?
A) (2;11) B) (-∞;2] va [11; ∞) C) (-∞;-2) v a ( 11; ∞) D) (-2;0) va (0;11)
17.
A) B) C) D)
18. 2(x-2)2+2(1-1,5x)=1 tenglama ildizlari yigindisining 2/11 qismini toping.
A ) 1/11 B ) 2 C)11 D) 1
19. vektor berilgan. a vektorning uzunligi 5 ga teng bo’lsa, ni toping.
A ) ± 1/2 B) 1 C) 2 D) -1
20. Balandligi 4 sm . asosi 16 sm bo’lgan teng yonli uchburchakka tashqi chizilgan aylana radiusini toping.
A) 10 B ) 8 C )9 D) 11
21. tenglamaning barcha ildizlari yig’indisini toping.
A) 2√3 B)1 C)√3 B ) 0
Agar bo’lsa, S qaysi oraliqqa tegishli?
A)(6;7) B) C) D)
23. ni hisoblang
A) 6 B) 8 C) 12 D) 4
24. ctg55°ctg45°tg35° ni hisoblang.
A) 0 B ) 0,5 C)1 D) 2
25. tenglamaning ildizlar yig’indisini toping.
A) 2 B ) 3 C) D)
26. tenglamani yeching.
A) ∅ B) 3 C) 1 D ) √2 - 1
2 7. Rasmada ifodalanganidek OD va CE kesmalar AB diametrgi perpendikulyar bo’lib, AO=2CE bo’lsa, SACB :SADB nisbatini toping.

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


28. tenglamaning yechimlari to'plamini toping.
A){5;-3} B) {5; 10} C) {5} D) {3;10}
29. funksiyaning aniqlanish sohasini toping
A ) B) C) D)
30.Hisoblang:
A) -1 B ) -√2 C)1 D) √2
31. 16 bit necha baytga teng?
A) 20 B) 0,02 C)2 D) 0,2
32. MS Excel 2003 dasturida berilgan =Если(Степен(3:4)>81; Сцепить(“ avto” :’'bus” ); MAKS (15;30;4)) formulani natijasini aniqlang.
A) 81 B)AVTOBUS С)30 D) avtobus
33. Kompyuterga dasturiy ta’minotini o’rnatish jarayoni... deyiladi.
A ) arxivlash B) defragmentatsiya C) installyatsiya D) deinstallyatsiya
34. MS Excel 2003 dasturida A1 katakda 8, A2 katakda 7, A3 katakda 6 qiymati berilgan bo’lsa, =MИH(A1:A3) formula bo’yicha A4 katakda qanday natija hosil bo’ladi?
A) 5 B ) 7 С)8 D)6
35. Fayllarning diskdagi bo’laklarini bir joyga to’plash ... deb ataladi.
A) formatlash B ) defragmentatsiya C) nazorat D) fayllarni tiklash
36. Paskal tilida quyidagi dastur bajarilishi natijasida ekranga chiqariladigan axborotlarni aniqlang:
Var k, b:integer; c:string;
Begin K:=4; B:=5; C:=” 21” ; If k>b then write
(“ C=” ,C:1) else write ( “ C=” ,C:1); end.
A) C=2121 B ) C=212 C)C=2 D)C1



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