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Question 1:The least common multiple of 330; 65; 15 is Question 2:Given seven numbers: 25; 17; 39; 43; 239; 1021; 1023.The composite numbers are  (Write numbers in order from the least to the greatest and use ";")Question 3:The common factors of 18 and 27 are (Write numbers in order from the least to the greatest and use ";")Question 4:Given the set of even numbers: {2; 4; 6; …; 100}.The number of elements is Question 5:Find four integer numbers a,b,c,d such thata + b + c + d = 1a + c + d = 2a + b + d = 3a + b + c...
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Question 1:
The least common multiple of 330; 65; 15 is 

Question 2:
Given seven numbers: 25; 17; 39; 43; 239; 1021; 1023.
The composite numbers are  
(Write numbers in order from the least to the greatest and use ";")

Question 3:
The common factors of 18 and 27 are 
(Write numbers in order from the least to the greatest and use ";")

Question 4:
Given the set of even numbers: {2; 4; 6; …; 100}.The number of elements is 

Question 5:
Find four integer numbers a,b,c,d such that
a + b + c + d = 1
a + c + d = 2
a + b + d = 3
a + b + c = 4
Answer: (a;b;c;d)=() 

Question 6:
Find a four-digit natural number that is less than 2015.If the thousands digit is erased,the number will be decreased by 9 times. 
Answer:The number is 

Question 7:
Calculate: 1×2+2×3+⋯+100×101=

Question 8:
The  term of the expression A=1-7+13-19+25-31+⋯ is 

Question 9:
Given the expression A= ...
Find the value of n such that 2A+3=
Answer: n=

Question 10:
A natural number has six digits and the units digit is 4.If the units digit is moved to the first row then the number will be increasedby 4 times.The number is 

1
16 tháng 3 2016

chết liền đưa nhìu câu quá

3 tháng 2 2016

1.9730

2.1403

tik nha

3 tháng 2 2016

xin olm trừ điểm 

27 tháng 2 2016

Câu 1: 40810

Câu 2: 24

Câu 5: 20

Câu 6:5036

Câu 7:6

16 tháng 3 2016

2: Ước của 120 là:

{1;2;3;4;5;6;8;10;12;15;20;24;30;40;60;120}

9: x+ (1+2+3+4+...+100) = 5750

    x + 5050= 5750

     x = 5750 - 5050 = 700

6. Chữ số thứ 215 là 1285

16 tháng 2 2017

cau 2 la co 16 uoc

cau 5 a=7 b=-1 c=-2 d=-3

9 tháng 8 2016

Toán bằng TA à. Kinh nhể

toan quoc te nhaQuestion 1:There are two parallel lines in the figure. What is the value of x?  Answer: x = Question 2:ABC and RTS are similar triangles.The value of x is Question 3:If x<0 and 5x+8+|3x|=0 then x=Question 4:I am a multiple of 70 between 400 and 600. My tens digit is odd. Who am I?Answer: Question 5:How many triples of integers (a,b,c) are there such that  ? Answer:  triples.Question 6:Each of the 37 students in the grade 8 at a school has one dog or one cat or both a dog and a...
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toan quoc te nha

Question 1:
There are two parallel lines in the figure. What is the value of x? 

 Answer: x = 

Question 2:


ABC and RTS are similar triangles.
The value of x is 

Question 3:
If x<0 and 5x+8+|3x|=0 then x=

Question 4:
I am a multiple of 70 between 400 and 600. My tens digit is odd. Who am I?

Answer: 

Question 5:
How many triples of integers (a,b,c) are there such that 
 ? 
Answer:  triples.

Question 6:
Each of the 37 students in the grade 8 at a school has one dog or one cat or both a dog and a cat. Twenty students have a dog and 24 students have a cat. 
How many students have both a dog and a cat?
Answer:  students.

Question 7:
The sum of 2 positive integer numbers is greater than their product if the smaller number is 

Question 8:
How many different real numbers satisfy the following equation?
 
Answer: 

Question 9:
The area of trapezoid ABCD is 180   .The altitude is 8 cm,AD is 10 cm,and BC is 17 cm.
What is AB,in centimeters?

Answer:  cm.

Question 10:
There are 115 cars in a village of 26 families. Each family has either 4 or 5 cars. 
How many families have 4 cars? 
 Answer:  families.

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