Hisoblang. A 0,09 B. 0,9 C. D. 0,03

1-variant

1. Hisoblang.

A) 0,09 B). 0,9 C). 9 D). 0,03

2. Tenglamani yeching.

A). B). C). D).
3.Mahsulotning narxi birinchi marta 25% ga, ikkinchi marta yangi bahosi yana 20% ga oshirildi. Mahsulotning oxirgi bahosi necha foizga kamaytirilsa, uning narxi dastlabki narxiga teng bo‘ladi?

A). 45 B). 48 C). 50 D). 33

4. Tenglamani yeching.

A). 20 B). 2 C). 0,2 D). 5

5. a(b – C) – b(c – A) – c(b – A) ni soddalashtiring.

A) 2ab B) – 2ac C) 2ab – 2bc D) 0

6. Agar bo’lsa, quyidagilardan qaysi biriga teng?

A) 4 – a B) 3 – a C) 3 – a/2 D) 2 – a

7. Hisoblang,


8. 1,25 songa teskari sonni toping.

A) 8 B) -0,8 C) 0,8 D) -5/4

9. x₁ va x₂ lar 2x²+2x – 3=0 tenglamaning ildizlari bo’lsa, ning qiymatini toping.

A) 2,5 B) -2,5 C) -1,5 D) 1,5

10. Agar bo`lsa ning qiymatini toping.


11. Ifodaning qiymatini toping.


12. sonlarining o`rta arifmetigi ga teng. ni toping

13. Ikki sonning EKUBi 9 EKUKi 108 ga teng. Agar bu sonlardan biri 36 bo`lsa, ikkinchisini toping.

14.Agar a=0,05 bo’lsa, ifodani qiymatini toping.

A) 400 B) 500 C) 200 D) 100
15.Agar 2x + y=6 bo’lsa, xy ning eng katta qiymati nechaga teng bo’ladi?

A) -2,5 B) 3 C) 4,5 D) 6

16. (0.02)³ : (0.5)⁴ ∙ 5⁶ ifodaning qiymatini toping?

A) B) 10 C) 8 D) 2

17. Maxrajni irratsionaldan qutqaring.

A) + ; B) 4( - ); C) ( - );

18. Ko’paytuvchilarga ajrating :

A) a(a+12) B) ( )(a - 2)

C) a(a-1)(a+2) D) (a+3)(a-2)
19. ko`phad quydagilarning qaysi biriga bo`linmaydi?


20. Dastlabki 30 ta natural sonlar ichida 6 soni bilan o'zaro tub bo'lgan sonlar nechta?


21. Ifodani soddalashtiring.




22. 3,3; x va -2,1 sonlarining o’rta arifmetigi 0,6 ga teng. x ni toping.

A) -0,6 B) 0,6 C) 2 D) 0,8

23. 2x(x – 1) – (2x+1)(x – 2) ko’phadni standart shaklga keltiring.

A) 2x²-3x B) 4x²-1 C) –x+1 D) x+2

24. Tenglamani yeching. 2^{2x +1} = 32;

A) 2; B) 6; C) -2; D) 3

25. Natural sonni 18 ga bo’lganda, bo’linma 19 ga, qoldiq 8 ga teng bo’ldi. Bo’linuvchini toping.

A) 243 B) 263 C) 273 D) 350