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\(Ư_{\left(5\right)}=\left\{\pm1;\pm5\right\}\)

\(B_{\left(5\right)}=\left\{0;\pm5;\pm10;,...\right\}\)

\(Ư_{\left(15\right)}=\left\{\pm1;\pm3;\pm5;\pm15\right\}\)

\(B_{\left(15\right)}=\left\{0;\pm15;\pm30;\pm45;....\right\}\)

Ư(10)là:[1,2,5,10]         B(10)là:[0,10,20,30,40,......]

B(15)là:[0,15,30,45,....]             Ư(15)là:[1,3,5,15]

Ư(-24)là:[-1,-3,-8,-24]             B(-24)là:[0,-24,-48,-72,...]

ƯC(12;18)là:[1,2,3,6]

ƯC(-15;20]là:[1,-1,5,-5]

giao từng câu 1 thôi 

Đúng 4 oi la la la ooo ooo ooo oOo

Em mới học lớp 5 nên chịu thôi

Ư(10) = { 1 ; 2 ; 5 ; 10 }

B(10) = { 0 ; 10 ; 20 ; 30 ....}

Ư(10) = {1,2,5,10}

B(10)=(0,10,20,30,40,50,...}

a) Ư (12) = {1;2;3;4;6;12}

Ư (16) = {1;2;4;8;16}

Ư (24) = {1;2;3;4;6;8;12;24}

ƯC (12; 16; 24) = {1;2;4}

b) ƯC (5; 15; 35) = {1;5}

c) BC (8; 12; 24) = {0;24;48}

d) BC (5; 15; 35) = {0;105;210;…}