Test B: Matematika

qaysi biriga teng bo‘lishi kerak?

A) 6 B) 5 C) 3 D) 2
4a² 16a16 (a 2)²

7. Ifodani soddalashtiring: : ₂
a 3  a 9
A) 6 − 2a B) 12 − 4a C) 4a – 12 D) 2a – 1
8. (5a − 3b) − (−4b + 7a) ifodani soddalashtiring.
A) 2a − b B) 2a + b C) −2a – b D) −2a + b
9. Detal uzunligi 1:8 masshtabli xaritada 4,5 cm bo‘lsa, 1:5 masshtabli xaritada necha santimetr bo‘ladi?
A) 7,2 B) 7 C) 7,8 D) 6,8
10. Bitta daftar 600 so‘m va u bitta qalamning narxidan 400 so‘mga qimmat. O‘quvchi 3600 so‘mga daftarlar va qalamlar sotib oldi. Quyida keltirilgan sonlardan qaysi biri xarid qilingan qalamlarning soni bo‘la oladi?
A) 5 B) 1 C) 3 D) 4
11. Arifmetik progressiyaning dastlabki sakkizta hadi yig‘indisi 248 ga, dastlabki o‘n to‘rtta hadi yig‘indisi esa 686 ga teng. Arifmetik xprogressiyaning beshinchi hadini toping.
A) 36 B) 34 C) 40 D) 42
12. Hisoblang: 0, 04 · 10⁻⁸ · 2, 3 · 10¹².
A) 92 B) 920 C) 9200 D) 9,2
13. ABCD parallelogramda C o‘tkir burchak. E nuqta AB tomonda yotadi. Agar AE:EB nisbat 2:3 kabi bo‘lsa, AECD to‘rtburchak yuzining BCE uchburchak yuziga nisbatini toping.
A) 3/2 B) 4/3 C) 5/3 D) 7/3
14. Ushbu ^{3n2  2n18} kasrning qiymati natural son bo‘ladigan n (n N) ning barcha n
qiymatlari yig‘indisini toping.
A) 39 B) 36 C) 38 D) 33
15. 6 kishidan 4 ta kishini va bu 4 kishidan 2 kishini necha xil usulda tanlab olish mumkin?
A) 60 B) 120 C) 90 D) 144