Gọi x là số học sinh có cả anh chị trong lớp John .Ta có sơ đồ Ven :
=> (18 - x) + x + (16 - x) + 4 = 35 <=> 38 - x = 35 => x = 38 - 35 = 3
Vậy lớp John có 3 học sinh có cả anh và chị
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.
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..............................................
The ratio between the numbers of books a sister and a brother had was 3:10 . The brother bought 52 books, then the ratio between the numbers of books the sister and the brother have becomes 2 :11. How many books does the brother have now?
Trả lời các câu hỏi.
I'm Nam. This is my family. There are five persons in my family: my father, my mother, my brother, my sister and me. We live on Nguyen Trai Street. My father is forty-five years old. He is an engineer. My mother is forty. She is a doctor. My brother is fifteen. My sister is ten. I am twelve. We are all students.
1. How many people are there in Nam's family?
2. Who are they?
3. Where do they live?
4. How old is his father?
5. What does his father do?
6. Is his mother a nurse?
7. How old is Nam?
8. What does he do?
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?
There are fewer than 30 students in the mathematics class. One half of them play the piano, one quarter play hockey and one seventh are in the school play. How many of the students play hockey?
chuyển cau những đoi dung nghia
let s go to the beach
what about
this school have five hundred students
there are
his brother likes to plays marbles
his brother enjoys
