Question

Tìm ƯCLN (18,30,77)

ƯCLN(16,80,176)

Answer 1

Ta có : 

Ư(18) = {1;2;3;6;9;18}

Ư(30) = {1;2;3;5;6;10;15;30}

Ư(77) = {1;7;11;77}

=> ƯCLN(18;30;77) = {1}