Các câu hỏi tương tự
1a, cho tap hop A={x la so tu nhien/x=7k+3; k la so tu nhien ;x < hoac = 150}
- hay liet ke cac phan tu cua A tu nho den lon
-tinh tong cac phan tu cua A
b, tim thuong cua mot phep chia biet rang neu them 15 vao so bi chia va them 5 vao so chia thi thuong va so du khong thay doi
c, tim 1so co 2 chu so sao cho
[(a.10+b):b=3b
1.Moi tap hop sau co bao nhieu phan tu
a)A={x€N/x-8=10}
b)B={x€N/x+5=5}
c)C={x€N/x×0=0}
d)D={x€N/5<x<6}
2.Viet tat ca cac tap hop con (khac rong )cua tap hop B:B={a,b,c}
3.Cho tap hop A={10,13,16,.......,100}
a)Tinh so phan tu cua tap hop A.
b)Tinh tong cac phan tu cua A.
Nho giup minh nha
cho tap hop M ={x thuoc N/ 27< x <143,x le}
a) Tim so phan tu cua tap hop M
b)Tinh tong cac phan tu cua tap hop M
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 = [\(x\in N\)/x = 7 . q ,q\(\in N\), x\(\le150\)]
a . hay liet ke cac phan tu cua A thanh mot day so tu nho den lon
b . tinh tong cac phan tu cua A
a)cho tap hop M ={0;3;6;6;9;...;3.n} voi n thuoc N.Tim so tu nhien n,biet tap hop M co 2003 phan tu.
b)Tap hop cac so chan 150 den so chan x co 43 phan tu.Tim so tu nhien x?
Viet cac tap hop sau = cach liet ke cac phan tu
A = { y * x l x E N, 3<x≤13}
C = { 4 x k + 1 l k E N , K ≤ 12}
D = { 8 x k - 3 l k E N , 4≤K≤9}
viet lai cac tap hop va tinh so phan tu cua no
B={x thuoc n / ko chia het chi 2,x be hon hoac bang 30}
cho tap hop a={x 3<x<6} va tap hop b cac so tu nhien le phan tu cua a vua thuoc b la?