BCNN(2;4;7)=28
=>Có 28 bạn
Số bạn chơi hockey là: 28*1/4=7 bạn
A parent to class teachers asked that "his class how many students?" The teacher replied that "if in addition to all of my students have and then add one-half of my game and then add 1/4 of my game and finally added his son again, there are all 100 children. Question is how many of the students?
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.
A book store had a box of books. One half but 5 fewer books were sold on the first day. One third of the remaining part and 12 more books were sold on the second day. Finally 20 books are left. How many book(s) did the book store have originally?
Read the text, and answer the questions
The Royal Ballet School, London
There are only 25 places for the new students every school year. Students are from 11 to 16 years old, and there are boys and girls. It''s a bording school.
On weekdays, there are four hours of lessons and two hours of ballets.In th evening, they watch TV at school. At the weekends, there are dance classes on Saturday mornings, and then they are free with their friends at school
1. How old are students ?
.......................................................
2. Are there 25 students at the school ?
.......................................................
3. Are they only boys at school ?
.........................................................
4. How many hours of lessons are there on weekday ?
.........................................................
5. How about hours of ballets ?
............................................
6.Are there dance classes on Saturdays ?
...................................................
7. Are the students free on Sundy ?
......................................
8. Are there at home in the evening ?
A survey was conducted on 100 students in beginning of the year. The findings are as follows:
56 students liked Mathematics
38 students liked English
52 students liked Science
6 students liked both Mathematics and English
4 students liked both English and Science
12 students liked all the three subjects
(a) How many students liked both Mathematics and Science?
(b) How many students liked only Mathematics?
viet lai cau sau sao cho nghia khong doi :
1. how many students are there in your class?
how many students does ...............................
2. the house is front of the tall trees.
the tall trees ...............................
3. our school has forty students.
there .....................................
4. the bookstore is behind my house.
my house .........................................
5. does phong`s school have forty classrooms?
are .....................................................
6. our school has 1600 students .
there are ............................
7. there are four people in her family .
her family ........................................
8. my house is benhind the cinema.
thec inema....................................
9. does your class have twenty five students?
are ........................................................
10. the cat is in front of the television .
the television ........................................
11. my class has thirty students.
there are.....................................
12. there are thirty students in my class.
my class ............................................
13. my school has two floor.
there..............................................
viet lai cau sau sao cho nghia khong doi :
1. how many students are there in your class?
how many students does ...............................
2. the house is front of the tall trees.
the tall trees ...............................
3. our school has forty students.
there .....................................
4. the bookstore is behind my house.
my house .........................................
5. does phong`s school have forty classrooms?
are .....................................................
6. our school has 1600 students .
there are ............................
7. there are four people in her family .
her family ........................................
8. my house is benhind the cinema.
thec inema....................................
9. does your class have twenty five students?
are ........................................................
10. the cat is in front of the television .
the television ........................................
11. my class has thirty students.
there are.....................................
12. there are thirty students in my class.
my class ............................................
13. my school has two floor.
there..............................................
An had 60 marbles. An wanted to put them in bags so that there are equal numbers of marbles in each bag. How many ways can An equally put the 60 marbles in bags? (Including the case putting in one bag)
Answer: There are ..... ways.
An had 60 marbles. An wanted to put them in bags so that there are equal numbers of marbles in each bag. How many ways can An equally put the 60 marbles in bags? (Including the case putting in one bag)
