1. a va b ning qanday qiymatlarida tenglamalar sistemasi yechimga EGA emas? A b c d 2

Variant 1 Test 11

1. a va b ning qanday qiymatlarida tenglamalar sistemasi yechimga ega emas?
A) B)
C) D)


2. Ko’p qavatli uyning 4–qavatigacha bo’lgan masofa 12 metr. Shu uyning 12–qavatigacha bo’lgan masofa necha metr?
A) 48 B) 44 C) 36 D) 33


3. tenglamani yeching.
A) 7 B) –1 C) 7; –1 D) 7;1


4. necha kvadrat santimetr bo’ladi?
A) 40244 B) 40304 C) 43004 D) 41034


5. ning qanday qiymatlarida tenglama bitta ildizga ega bo’ladi?
A) B) 0 va 1 C) 3 va 1,5 D)


6. tenglama ildizlarini toping.
A) 1 B) C) –1 D) 1; –8


7. Uch o’quvchining o’rtacha bali 72,6 ga teng, boshqa ikki o’quvchining o’rtacha bali 76,1 ga teng. Bu besh o’quvchining o’rtacha bali nechaga teng?
A) 74 B) 73,4 C) 74,35 D) 75,2


8. Birinchi son 0,75 ga, ikkinchi son 0,15 ga teng. Birinchi son ikkinchi sondan necha foiz ortiq?
A) 500 B) 400 C) 20 D) 80


9. Agar bo’lsa,
ni soddalashtiring.
A) B) 2c C) 2a D)
10. Sinfda 14 ta bola bor. Ular bir-birlari bilan salomlashib ko’rishishdi. Umumiy salomlashishlar sonini toping.
A) 91 B) 192 C) 98 D) 84


11. Tengsizlikni yeching.

A) B)
C) D)


12. Kasrning surati maxrajidan 5 ga kam. Agar kasrning maxrajiga 7 qo’shilsa uning qiymati 0,5 ga teng bo’lib qoladi. Shu kasrning surat va maxrajlari yig’indisini toping.
A) 39 B) 29 C) 37 D) 45
13. To’rtta sonning yig’indisi 128 ga teng. Agar birinchi va ikkinchi sonning nisbati 1;3 kabi, ikkinchi va uchinchi sonning nisbati 3;5 kabi, uchinchi va to’rtinchi sonlarning nisbati 5;7 kabi bo’lsa, to’rtinchi va birinchi sonlarning ayirmasini toping.
A) 48 B) 56 C) 32 D) 16


14. Ozoda sinf ro’yxatida 13–o’rinda, orqadan sanaganda 17–o’rinda. Ozoda o’qiydigan sinfda nechta o’quvchi bor?
A) 30 B) 31 C) 29 D) 28


15. Noma’lum sonning 14% i 80 ning 35% iga teng. Noma’lum sonni toping.
A) 120 B) 168 C) 200 D) 280


16. (x; y) sonlar jufti sistemaning yechimi bo’lsa, y–x ni toping.
A) –1 B) –3 C) 0 D) 3


17. Aka va ukaning yoshlari farqi 10 yosh. Uch yildan keyin aka ukasidan 1,5 marta katta bo’lib qolsa, aka va ukaning hozirgi yoshlari yig’indisini toping.
A) 36 B) 40 C) 44 D) 50


18. Agar tenglamaning ildizlari shartni qanoatlantirsa, q ning qiymatini toping.
A) –11 B) –5 C) –19 D) –12


19. Siz 30 ta testdan 24 tasini to’g’ri topdiz. Sizning to’g’ri javoblariz necha foizga teng?
A) 75 B) 72 C) 80 D) 85


20. Xaritada ikki shahar orasidagi masofa 15 sm. Xaritaning masshtabi 1:2000000 bo’lsa, shaharlar orasidagi haqiqiy masofa necha km?
A) 3 B) 30 C) 300 D) 3000


21. ni hisoblang.
A) B) C) D)


22. 0,0000025 sonini standart ko’rinishda yozing.
A) B)
C) D)


23. soni qanday raqam bilan tugaydi?
A) 3 B) 2 C) 1 D) 0


24. Uchta sonning o’rta geometrigi 6 ga teng bo’lib, ulardan ikkitasi 8 va 9 bo’lsa, uchinchi son necha bo’ladi?
A) 3 B) 7 C) –5 D) –3


25. 1 dan 110 gacha bo’lgan sonlar orasida 2 ga ham, 5 ga ham bo’linmaydiganlari nechta?
A) 44 B) 41 C) 40 D) 35


26. Fermadagi tovuqlar soni qo’ylar sonidan 2 marta ko’p. Agar u yerdagi hayvonlar oyoqlari sonining yig’indisi 600 ta bo’lsa, fermada nechta tovuq mavjud?
A) 104 B) 75 C) 150 D) 136
27. tenglama a ning qanday qiymatlarida yagona yechimga ega?
A) B)
C) D)


28. tenglamaning ildizlari bo’lsa, ning qiymatini toping.
A) –176 B) –120 C) 176 D) 280


29. Quyidagi tenglamalardan qaysi biri ildizga ega emas?
A)
B)
C)
D)


30. 38 ta chet tili o’qituvchisidan 26 tasi ingliz tili, 18 tasi nemis tili o’qituvchilari. Shu o’qituvchilardan nechtasi faqat bitta tilda dars beradi?
A) 12 B) 6 C) 20 D) 32