Sonlar va ular ustida amallar

Question 1

Hisoblang: $(6{,}3-3{,}5):1{,}4+7{,}2\cdot\frac{5}{3{,}6}$

Accepted Answer

12

Answer

20

Answer

4,5

Answer

5

Question 2

Hisoblang: $7{,}2(1)-4{,}4(2)+\frac{31}{90}$

Accepted Answer

3,1(3)

Answer

3,1(2)

Answer

2,1(3)

Answer

2,1(2)

Question 3

$|x-1|+|x+1|+|x-2|+|x+2|+...+|x-2020|+|x+2020|$ ifodani $x>2020$ da hisoblang.

Accepted Answer

$4040x$

Answer

$4020x$

Answer

$1010x$

Answer

$2020x$

Question 4

36,8364 sonini yuzdan birgacha aniqlikda yaxlitlang.

Accepted Answer

36,84

Answer

36,83

Answer

36,8

Answer

36,836

Question 5

$\frac{2}{33}$ sonini cheksiz davriy o‘nli kasr ko‘rinishida ifodalab, verguldan keyingi 13-o‘rinda turgan raqamini toping.

Accepted Answer

0

Answer

6

Answer

2

Answer

3

Question 6

Rasmda berilgan ma’lumotlardan foydalanib, quyidagi tengsizliklardan noto‘g‘risini aniqlang.

Accepted Answer

$a\cdot b\cdot c>0$

Answer

$a+b>0$

Answer

$b-a>0$

Answer

$b+c>0$

Question 7

Agar $a=1+2+3+...+39$ va $b=37+38+39+...+50$ bo‘lsa, $1+2+3+...+50$ yig‘indini $a$ va $b$ orqali ifodalang.

Accepted Answer

$a+b-114$

Answer

$a+b-108$

Answer

$a+b-105$

Answer

$a+b-111$

Question 8

Sonlar o‘qi tasvirlangan.
Quyidagi munosabatlardan qaysi biri to‘g‘ri?

Accepted Answer

$ab<0$

Answer

$ac>0$

Answer

$abc>0$

Answer

$bc<0$

Question 9

Sonlarni taqqoslang: $a=\frac{7}{105}$, $b=\frac{7}{103}$, $c=\frac{7}{104}$.

Accepted Answer

$a<c<b$

Answer

$c<a<b$

Answer

$a<b<c$

Answer

$b<c<a$

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