a)Viet tap hop M cac so tu nhien lon hon 9, nho hon hoac bang 15 bang hai cach.
b)Viet tap hop A cac so tu nhien khong vuot qua 30 bang hai cach.
a)Viet tap hop M cac so tu nhien lon hon 9, nho hon hoac bang 15 bang hai cach.
b)Viet tap hop A cac so tu nhien khong vuot qua 30 bang hai cach.
1.viet tap hop M gom cac phan tu la uoc chung cua 12 va 24
2.Tim cac tap hop con cua M co 2 phan tu
3.Chi ra so nguyen to trong tap hop M
viet tap hop B cac so tu nhien nam giua 2 so a va a+6
viet cac phan tu cua tap hop B theo thu tu giam dan
Cho hai tap hop A= {5;7},B={2;9}
Viet tap hop gom hai phan tu trong do co mot phan tu thuoc A, mot phan tu thuoc B
Bai9: Cho A = { x ∈ N \ x ⋮ 2, x ⋮ 3,x< 100
B = { x ∈ N \ x ⋮ 6,x< 100
Hay viet cac tap hop A,B bang cach liet ke cac phan tu
Viet tap hop cac chu so cua cac so:
a)97542 b)29635 c)60000
cho tap hop A={3;4;5}.Tap hop A co bao nhieu phan tu;co bao nhieu tap hop con
cho tap hop E ={1,a,b,2} cach viet nao la dung nhat