Tổng của chúng là: 

3+4+8+9 + 4 = 28 

Đáp số: 28

333+666=999

kick tớ nhé

vậy số cần tìm là:421

giá trị nhỏ nhất của biểu thức này là: 3.

Choose the correct form of the verb from the parentheses .

1 . It ( was / were ) the children who made that mess .

2 . It ( is / are ) these questions that are difficult .

3 . A few ( has / have ) failed the test .

4 . Several theories on this subject ( has / have ) been proposed .

5 . Living expenses in this country , as well as in many others , ( is / are ) at an all-time high .

6 . Every Participant ( has / have ) been notified of the change in sheduce .

7 . Most of the rooms in the hotels ( have / has) air-conditioning

393 = 3 . 131

262 = 2 . 131

Do đó ƯC( 393 ; 262 ) = Ư(131)  = { -131 ; -1 ; 1 ; 131}

a)253x27+253x72+253x1

=253(27+72+1)

=253x100

=25300

b)25x9-32:4

=217

c)3^13x3^2(29+88)tat ca tren 3^13x81

3^2x117/81

3^2X117/3^3

117/3=39

k mk nhe!!!!!!!!!!!!!

là người thông minh từ nhỏ

1. The text mainly discusses.........

A. The geography B. The wildlife of Australia C. The economy of Australia D. A and B are correct

2. Which of the following is true according to the text?

A. Australia is surrounded by two large bodies of water

B. Australia has unique and strange collection of wildlife

C.Australia don't have any deserts

D. Australia is a large continent

3. Which animal is NOT mentioned in the text?

A. Koala B. Camel C. Sheep D. Platypus

4. The majority of Australians live in/on............

A. The small towns B. The desert C. Farms D. Big cities

xam, nham, lo tat may dj ngu dj cha