1. Ushbu ???? ∙ ???? ∙ ???? ∙ ???? ∙ ∙ ???????? ∙ ???????? ko`paytma nechta nol bilan tugaydi?

Matematika

1. Ushbu 𝟏 ∙ 𝟐 ∙ 𝟑 ∙ 𝟒 ∙ … .∙ 𝟒𝟗 ∙ 𝟓𝟎 ko`paytma nechta nol bilan tugaydi?
A) 8 B) 10 C) 12 D) 11
2. Tenglamani yeching: (5x+90):5=20
A) 10 B) 5 C) 2 D) 1
3. 2 ta bo`sh joy bor. 3 nafar kishidan 2 nafarini su joyga necha xil usulda o`tqazish mumkin?
A) 4 B) 6 C) 3 D) 9
4. Uchburchakning tomonlari 8, 10, 15 bo`lsa, perimetini toping.
A) 29 B) 33 C) 43 D) 39
5. Radiusi 3 sm bo`lgan doira yuzini toping. (π=3,14 deb oling).
A) 28,26 B) 28,36 C) 21,126 D) 27,26
6. Agar, BD=4 va AC=8 bo`lsa, uchburchak yuzini toping.

A) 32 B) 27 C) 16 D) 42
7. Aylana uzunligi 25,12 sm ga teng. Shu aylana radiusini toping.
A) 6,28 B) 3,5 C) 4 D) 4,6
8. Hisoblang: 4,(66)+2,5(5)-3,(2)=
A) 7 B) 4 C) 7,(4) D) 2,4(5)
9. Hisoblang: 39,6 – 21,5 ∙ (0,38 + 0,22) ∙ 0,6 – 5,3 ∙ 3,4=
A) 13,84 B) 15,62 C) 19,11 D) 10,78
10. Novvoyxonada non yopish uchun birinchi kuni 5,42 t, ikkinchi kuni birinchi kunga qaraganda 2,43 t, uchinchi kuni esa dastlabki ikki kundagiga qaraganda 3,21 t kam un ishlatildi. Novvoyxonada shu uch kunda jami qancha un ishlatilgan?
A) 12,93 B) 19 C) 15,72 D) 13,61