tim so uoc cua 12,36,40 roi tim tap hop cac uoc cua moi so do
phan tich cac so sau ra thua so nguyen to roi tim tap hop cac uoc cua moi so .neu cach tim tap hop cac uoc moi so
51 ; 75 ; 42 ; 30
\(51=3.17\)
\(\LeftrightarrowƯ\left(51\right)=\hept{ }3;17;1;51\)
\(75=3.5^2\)
\(\LeftrightarrowƯ\left(75\right)=\hept{ }3;5;25;75;1\)
\(42=2.3.7\)
\(\LeftrightarrowƯ\left(42\right)=\hept{ }1;2;3;7;42;14;6\)
\(30=2.3.5\)
\(\LeftrightarrowƯ\left(30\right)=\hept{ }1;2;3;5;15;10;6;30\)
phan tich cac so sau ra thua so nguyen to roi tim tap hop cac uoc cua moi so .neu cach tim tap hop cac uoc moi so
51 ; 75 ; 42 ; 30
phan tich cac so sau ra thua so nguyen to roi tim tap hop cua cac uoc cua moi so sau
phan tich cac so sau ra thua so nguyen to roi tim tap hop cac uoc cua moi so do 78;70
3)tim hai so tu nhien lien tiep co tich bang 1190
1.Cho 3 so:36,84,168
a.Phan tich moi so ra thua so nguyen to roi cho biet moi so do co may uoc
b.Tim cac tap hop uoc cua moi so
2.Viet cac tap hop sau roi tim cac phan tu chung cua cac tap hop do:
a.Ư(4),Ư(6)
b.B(4),B(6)
Cac ban lam on giup mik nha mai mik phai di hoc roi ban nao lam duoc mik tick cho ,cam on cac ban nha
Câu 2:
a: Ư(4)={1;2;4}
Ư(6)={1;2;3;6}
ƯC(4;6)={1;2}
b: B(4)={0;4;8;...}
B(6)={0;6;12;18;...}
BC(4;6)={0;12;24;...}
Tiim uoc chung lon nhat roi tim tap hop cac uoc chung cua cac so sau
A, 12 , 18, 24
B, 2100 va 924
a) 12 = 22 . 3
18 = 2 . 32
24 = 23 . 3
ƯCLN(12,18,24) = 2 . 3 = 6
ƯC(12,18,24) = Ư(6) = {1;2;3;6}
b) 2100 = 22 . 3 . 52 . 7
924 = 22 . 3 . 7 . 11
ƯCLN(2100,924) = 22 . 3 . 7 = 84
ƯC(2100,924) = Ư(84) = {1;2;3;4;6;7;12;14;21;28;42;84}
TL:
a) 12 = 22 . 3
18 = 2 . 32
24 = 23 . 3
ƯCLN(12,18,24) = 2 . 3 = 6
ƯC(12,18,24) = Ư(6) = {1;2;3;6}
b) 2100 = 22 . 3 . 52 . 7
924 = 22 . 3 . 7 . 11
ƯCLN(2100,924) = 22 . 3 . 7 = 84
ƯC(2100,924) = Ư(84) = {1;2;3;4;6;7;12;14;21;28;42;84}
HT
Trong tap hop so tu nhien N, tim so cac uoc cua A=6001128000 ma so do chia het cho B=1260
ai tick cho mik đến 260 thì mik tick cho cả đời
133
a.phan tich so 111 ra thua so nguyen to roi tim tap hop cac uoc cua 111
b.thay dau * boi chu so thich hop:
**.*=111
a) 111 = 3 . 37. Tập hợp Ư(111) = {1; 3; 37; 111}.
b) Từ câu a suy ra phải điền các chữ số như sau 37 . 3 = 111.
tk nha
cho cac so nguen : a = 10 , b = -18
a) viet tap hop cac uoc cua a , cac uoc cua b
b) viet tap hop cac so nguyen vua la uoc cua a vua la uoc cua b
c) viet tap hop cac so nguyen vua la boi cua a vua la boi cua b