{1},{2},{3},{4},{5}
{1,2},{1,3},{1,4},{1,5},{2,3},{2,4},{2,5},{3,4},{3,5},{4,5}
{1,2,3},{1,2,4},{1,2,5},{1,,3,4},{1,3,5},{1,4,5},.........................
bạn ơi nhiều lằm viết mỏi cả tay
Cho tap hop A = X E N*/ 3,x < 15
a) Viet tap hop A bang cach liet ke cac phan tu tap hop
b) Viet tap hop con co 1 phan tu cua tap hop A
cho x = 3a +1 voi a = 0 1 2 3 4 bang cach liet ke cac phan tu hay viet tap hop g gom cac phan tu la gia tri cua x
Cho tap hop A{x thuoc x <12} viet tap hop A bang cach liet ke cac phan tu
Viet tap hop sau bang cach liet ke ca phan tu
b Viet tap hop B cac so tu nhien co 3 chu so co tong bang 2
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
M = ( 0 ; 2;4;......96;98;100;102;106)
Q = ( x E N* | x la so tu nhien , x <
a> Viet tap hop M bang cach chi ra tinh chat dac trung cua phan tu. Viet tap hop Q liet ke phan tu
b> Moi tap hop co may phan tu
Cho A la tap hop cac so tu nhien nho hon 7 va b la tap hop cac so tu nhien chan nho hon 8
hay viet tap hop a va b la cach liet ke cac phan tu
viet cac tap hop sau bang cach liet ke phan tu va chi ra moi tap hop co bao nhieu phan tu .
a, tap hop A cac so tu nhien co 2 chu so trong do chu so hang chuc lon hon chu so hang don vi la 2 .
b, tap hop B cac so tu nhien co 3 chu so bang 3 .
Viet tap hop sau bang cach liet ke cac phan tu :
A={x thuoc Z / - 5 < x < 5 }
cho biết tập hợp A có bao nhiêu phần tử