lay vi du ve 1 tap hop

nguoi ta dat ten cho tap hop nhu the nao

viet tap hop A cac so tu nhien nho hon 5. chi ra cac phan tu cac tap hop tu A. so 1 co thuoc tap hop A hay ko, viet ki hieu. so 6 co thuoc tap hop A hay ko, viet ki hieu

viet tap hop B cac so tu nhien nho hon 6 bang 2 cach

viet tap hop D cac so tu nhien nho hon 7 roi dien ki hieu thich hop vao o vuong : 2.. D; 10..D

viet tap hop cac chu cai trong tu ''nha trang ''

viet tap hop bang cach lien ket cac phan tu cua tap hop trong cac so tu nhien lon hon 14 nho hon15 co chua chu so 3 cac so 13 ,25,53 co thuoc tap hop hay khong

Cho A la tap hop cac so tu nhien lon hon 50va nho hon 100.Viet tap hop A bg cach chi ra cac tinh chat dc trung cho cac phan tu cua no 

cho B ={50;51;52...97;98;99 } .dung 1 trong cac ki hieu 

thuoc;kg thuoc;bg; tap hop con de  bieu dien moi quan he giua 2 tap hop A va B

b] Tap hop A co bao nhieu phan tu? tim tg tat ca cac so la phan tu cua tap hop A

vet tap hop A cac so tu nhien khong qua 5 bang hai cach bieu dien tren tia so cac phan tu cua tap hop A

cho 2 tap hop a= 10,8,2 b =5,7,9,4 viet tap hop gom 2 phan tu trong do 1 phan tu thuoc a 1 phan tu thuoc b neu tap hop a la m phan tu tap hop b gom n phan tu cac phan tu cua a va b khac nhau thi có bao nhiêu tap hop gom 2 phan tu trong do 1 phan tu thuoc a 1 phan tu thuoc b  giai ra luon nha cac ban

viet tap hop A cac so tu nhien khong vuot qua 5 bang hai cach . Bieu dien tren tia so cac phan tu cua tap hop A

cho A = {xez/-6<x<10}.B={-3;-1;0;6;9;-8;10}

a) Hay liet ke cac phan tu cua tap hop A

b) Tap hop A co bao nhieu phan tu, tap hop B co bao nhieu phan tu 

c) Hay viet tat ca cac phan tu vua thuoc A vua thuoc B

ban An co 30 000 dong dung de mua vo co 2 loai vo: loai 1 gia 3000 dong loai 2 gia 1500 dong ban An mua duoc nhieu nhat bao nhieu quyen vo neu

a) ban An chi mua vo loai1

b) ban An mua 5 quyen vo loai1 , so tien con lai mua vo loai 1

2)

a) cho tap hop A cac so tu nhien lon hon 7 va nho hon 13 . hay viet tap hop A bang hai cach

b) cho B ={2;4;6;8;.....;52;54} tap hop B co bao nhieu phan tu tinh tong cac phan tu thuoc tap hop B

A={x thuoc N /7nho hon hoac bang x nho hon hoac bang 50, x chia het cho 7

a, viet tap hop A bang cach liet ke cac phan tu

b, tim sophan tu cua tap hop tren