Lấy 13 + 18 + 7 = 38(bạn). Bạn được tổng số bạn thích chơi bóng đá, bóng rổ và không thích thứ gì.
Vậy muốn tìm số bạn thích tất cả ta lấy: 38 - 30 = 8(bạn)
Đáp số: 8 bạn
There are 30 students in a class.13 students like football;18 students like volleyball and 7 students don't like anything.How many students like both?
There are 30 students in a class.13 students like football; 18 students like volleyball and 7 students don't like anything.How many students like both?
There 30 students in a class. 16 students have ruler; 12 students have erasers and 8 students have nothing. How many students have both at least?
Class 4A has 45 students, class 4B has 42 students. How many students are there in whole classes
-> There are .............. students
Class 4A has 32 students, class 4B has 36 students. How many students are there in whole classes
A shool has 24 classes and there are 40 students in each class. 1/8 of the students wear glasses and 1/12 of those who wear glasses are boys. How many schoolgirls wear glasses in the schoool?
help me!
Nam My primary school has 398 boys and 325 girls .
How many students are there in Nam My primary school .
Answer : There are ..............................students in Nam My primary school .
there are 9 more boys than girls in a class . There are 37 students in all . how many girls are there in the class ?
in a class A of 160 students, the ratio of boys to girls is 3 to 5.in the class B, the ratio of boys to girls is 3 to 2. when the to classes are combined, the ratio of boy to girls is 1 to 1. how many students are there in the class B
