Test matematika progressiya 1

29.6-va 9- hadlari yig’indisi 24 ga teng bo’lgan arifmetik progressiyaning 7-hadi 10 ga teng. Bu progressiyaning ayirmasini toping. A)2 B)4 C)3 D)5

.Hadlari ayirmasi 5 ga teng bo’lgan arifmetik progressiyaning 7- va 10- hadlari yig’indisi 26 ga teng.Shu progressiyaning 9-hadini toping . A)15,5 B) 22 C)14 D) 10,5
30.n ta hadining yig’indisi S_n=2n²-3n bo’lgan arifmetik progressiyaning umumiy hadi ko’rinishini toping.

A)a_n =2n-1 B) a_n =4n-5 C)a_n =10n-5 D)a_n =2n+3

31.Arifmetik progressiyada a₂=12 va a₅=3. Shu progressiyaning 10-hadini toping?

A) -6 B) -15 C) -12 D) -30

32.Arifmetik progressiyada a₂-a₁=6 bo`lsa, a₈-a₆ ni toping?

A) 10 B) 12 C) 9 D) 18

33.Arifmetik progressiyada a₃+a₅=12. S₇ ni toping?

A) 18 B) 36 C) 42 D) 48

34.Arifmetik progerssiyada a₁=-3 va d=5 bo`lsa, S₁₅-S₁₄ ayirmani toping?

A) 73 B) 70 C) 67 D) 64

35. x y ning 50 foiziga teng bo`lsa, y x ning necha foiziga teng.

A) 200 B) 100 C) 150 D) 80

36. Turistlarning 35 tasi ingliz tilini, 28 tasi o`zbek tilini biladi. Turistlar 49 kishi bo`lsa , ikkala tilni ham biladigan turistlar nechta ?

A) 20 ta B) 16 ta C) 14 ta D) 18 ta .

TUZUVCHI: QOSIMOV MIRJALOL