9-sinf Matematika test

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9-sinf Matematika test. IV – chorak

1. Agar: va bo’lsa, arifmetik progressiyaning dastlabki beshta hadini toping.

A) 2, 1, 3, 5. B) 6, 2, 1, 0. D) -3, -1, 1, 3, 5. E) 0, 1, 3, -3.
2. Arifmetik progressiyada: agar bo’lsa, ni toping.
A) B) D) E)
3. Arifmetik progressiyaning n – hadi formulasini yozing. 25, 21, 17, 13,…….;
A) B) D) E)
4. Agar arifmetik progressiyada: bo’lsa, uning ayirmasini toping.
A) 0,2 B) 0,3 D) 0,5 E) 0,6
5. Agar geometric progressiyada: ,
A) -5, 12, 17, 31 B) -3, 12, -48, 129, -768 D) 6, 3, 2 E) 1, 4, -2
6. Geometrik progressiyada: b va bo’lsa, ni hisoblang.
A) B) D) E)
7. Geometrik progressiyada tagiga chizilgan hadning nomerini toping: 4, 12, 36, …., 324, …..;
A) 4 B) 6 D) 3 E)5
8. Agar geometric progressiyada
A) B) D) E)
9. Agar geometrik progressiyada: , bo’lsa, va ni toping.
A) B) D) E)
10. Agar geometrik progressiyada: bo’lsa, uning hadlari soni n ni toping.
A) B) D) E)
11. 2 dan 98 gacja bo’lgan barcha natural sonlar yig’indisini toping. (98 ham yig’indiga kiradi)
A) 1216 B) 4850 D) 1292 E) 1236
12. Agar arifmetik progressiyada: ;
A) 2550 B) 3418 D) 4526 E) 1639
13. Yig’indisi 75ga teng bo’lishi uchun 3 dan boshlab nechta ketma-ket natural sonni qo’shish kerak?
A) 15 B) 16 D) 17 E) 18
14. Agar: 90 + 80 + 70 + … + (-60)yig’indining qo’shiluvchilari arifmetik progressiyaning ketma-ket hadlari bo’lsa, shu yig’indini toping.
A) 340 B) 330 D) 120 E) 240
15. 7 ga karrali nechta natural sonni qo’shganda 385 hosil bo’ladi?
A) 10 B) 19 D) 22 E) 55
16. cheksiz kamayuvchi geometrik progressiyada bo’lsa, q ni toping.
A) B) D) E)
17. Yig’indisi 252 ga teng bo’lishi uchun 5 dan boshlab nechta ketma-ket natural sonni qo’shish kerak?
A) 30 B) 14 D) 12 E) 21
18. Geometrik progressiyada bo’lsa, ni toping.
A) 526 B) 364 D) 729 E) 728
19. Cheksiz kamayuvchi geometrik progressiya yig’indisini toping: 6, 1, , ….;
A) 7,2 B) 3,6 D) 4,8 E) 8,5
20) Arifmetik progressiyada: bo’lsa, uning dastlabki ta hadining
yig’indisini toping.
A) -256 B) 360 D) -290 E) 320

21. Arifmetik progressiyada dastlabki n ta hadining yig’indisi qauyidagiga teng: ………

22. Arifmetik progressiyaning n – hadining formulasini yozing: ……….
23. …….; formula geometrik progressiya n – hadining formulasi deyiladi.
24. Maxrajning moduli birdan kichik bo’lgan geometrik progressiya ……
geometrik progressiya deyiladi.
25. Haqiqiy sonlar to’plami - ……. va ……. sonlar to’plami.