Arifmetik progressiya — 9-sinf Algebra test savollari

1.a1 = 5, d = 3 bo'lgan arifmetik progressiyaning 20-hadini toping.

• A)62
• B)60
• C)65
• D)57

2.Arifmetik progressiyada a5 = 17, a9 = 33. d ni toping.

• A)4
• B)3
• C)5
• D)2

3.Arifmetik progressiyada a3 = 11, d = 4. a1 ni toping.

• A)3
• B)7
• C)15
• D)19

4.4, 7, 10, 13, ... arifmetik progressiyaning qaysi hadi 100 ga teng?

• A)33-had
• B)32-had
• C)34-had
• D)30-had

5.Arifmetik progressiyada a1 + a5 = 20 bo'lsa, a3 ni toping.

• A)10
• B)20
• C)5
• D)15

6.Arifmetik progressiyaning n-hadi formulasini ko'rsating.

• A)an = a1 + (n-1)d
• B)an = a1·$q^{n-1}$
• C)an = a1 + nd
• D)an = a1·n

7.a1 = 2, d = 5 bo'lgan arifmetik progressiyaning 6-hadini toping.

• A)27
• B)22
• C)25
• D)32

8.3, 8, 13, 18, ... arifmetik progressiyaning ayirmasi (d) nechaga teng?

• A)5
• B)3
• C)8
• D)10

9.Arifmetik progressiyada a2 = 9, a4 = 15 bo'lsa, d ni toping.

• A)3
• B)6
• C)2
• D)4

10.Arifmetik progressiyada ketma-ket uchta had a, b, c bo'lsa, b qanday munosabatni qanoatlantiradi?

• A)$b=\frac{a+c}{2}$
• B)b = a + c
• C)b = ac
• D)b² = ac