8-9 sinflar uchun matematika variant I 1-15 savollar qiyinlik darajasi Har bir to`g`ri javob 2,1 ball bilan baholanadi

16-25 savollar- qiyinlik darajasi 1. Har bir to`g`ri javobga 2,1 ball beriladi

16) Agar ( +1)=1 bo’lsa, (x+y)² ning qiymatini toping

A) 9 B) 25 C)16 D) 0

17) Hisiblang

A) 1 B) 2 C)6 D) 4

18) 125⁶ ·15⁴ ·2048² ko’paytmaning qiymati nechta xonali son.

A) 22 B) 24 C)26 D) 34

19) Tenglamani yechimlar yig’indisini toping. (x²-2021²)² -8084x -1=0

A) 4042 B) 4000 C)2021 D) 4041

20) Dastlabki uchta raqamining yig’indisi 20 ga oxirgi uchta raqamining yig’indisi esa 17 ga teng bo’lgan turli to’rt honali sonlar nechta

A) 18 B) 28 C)16 D) 35

21. 
    Markazi (0; 0) nuqtada bo`lgan aylanadagi A (0; 2) nuqtani soat mili harakati yo`nalishida aylana bo`ylab 60<sup>0</sup> ga burish natijasida hosil bo`lgan nuqtaning koordinatalari yig`indisini toping.
    

A) 1 B) 1- C) 1+ D) 2

22) Rombning diagonallari 2 va 3 bo`lsa, unga ichki chizilgan doiraning yuzini toping.

A) π B) π C) π D) π

23) To`g`ri burchakli uchburchakning o`tkir burchagi 60<sup>0</sup>. Shu burchakka yo`pishgan kateti uzunligi 2 cm ga teng bo`lsa, uning eng katta medianasi uzunligini (cm) toping.

A) 13 B) 2 C) 3 D)

24) Alisher birinchi kunda 2021 sonini yozdi. Har keyingi kuni u oldingi kunda yozilgan son raqamlarining kvadratlar yig’indisini hisoblab yozmoqda. Alisher 2021-kuni qanday sonni yozadi?

A) 58 B) 37 C)61 D) 42

25) Agar musbat x+y+z=2021 bolsa, ning eng kichik qiymatini toping.

A) B) C)2021 D) 2012