Ifodani ga bo‘lgandagi qoldiqni toping. B c d 1

Matematika

1. 
   3⁴ⁿ⁺² ifodani 10 ga bo‘lgandagi qoldiqni toping.
   

1. 
   4 B) 8 C) 9 D) 1
   

2. 
   Agar 10! +8! = 91∙ n! ekanligi ma’lum bo‘lsa, n soni 10 dan necha marta ko‘p?
   

1. 
   1, 25 B) 2 C) 0, 8 D) Ø
   

3. 
   Agar x, y, z sonlari uchun x, y, z N munosabat bajarilsa, 2x+3y+6z=48 tenglamadan x ni toping.
   

1. 
   16 B) 12 C) 20 C) 24
   

4. 
   ifodaning qiymatini toping.
   

1. 
   1 B) C) 2 D) 1, 02
   

5. 
   ABCD parallelogrammda AD=8 sm, AB=BD, BE – ABD uchburchakning balandligi. BCDE trapetsiyaning o ‘rta chizig ‘ini toping.
   

1. 
   3.5 sm B) 5 sm C) 6 sm D) 7 sm
   

6. 
   ABC uchburchakda BE mediana va AD bissektrissalar o‘zaro perpendikular. AB tomonni AC tomonga nisbatini toping.
   

1. 
   1:2 B) 2:1 C) 3:1 D) 1:3
   

7. 
   x, y, z – musbat butun sonlar va x² y=100, z² x=4 ekanligi ma’lum bo‘lsa, x ni z ga nisbatini toping.
   

1. 
   5 B) 0, 01 C) 0, 5 D) 1
   

8. 
   Tenglamani yeching: =3
   

1. 
   3 B) 2 C) 1 D) 0
   

9. 
   Agar m – natural son bo‘lsa, ifoda quyidagilarning qaysi biriga teng bo‘lishi mumkin?
   

1. 
   B) C) D)
   

10. 
    Tenglamani yeching: .
    

1. 
   19 B) 1 C) 2a D) –19
   

11. 
    17 dan 61 gacha nechta tub son bor?
    

1. 
   11 B) 13 C) 12 D) 14
   

12. 
    x²–11,8x–15,6=0 tenglama berilgan. Ildizlari berilgan tenglama ildizlaridan 2 marta katta bo‘lgan tenglama tuzing.
    

1. 
   x² – 23,6x – 62,4 = 0 C) x² – 12,8x – 31,2 = 0
   
2. 
   x² – 23,6x – 31,2 = 0 D) x² + 23,6x – 62,4 = 0
   

13. 
    tenglik berilgan. a+b+c ifodaning qiymatini toping.
    

1. 
   1 B) C) D)
   

14. 
    Kasrni qisqartiring:
    

1. 
   B) C) В)
   

15. 
    Agar a va b lar uchun 2(a +1)(b +1)=(a+b)(a+b+2) ifoda o‘rinli bo‘lsa, a²+b² ni hisoblang.
    

1. 
   2 B) 3 C) 1 D) 0, 5