056-2007

MO640 - Multiple-choice question

Given that α = (a b), β = (a b c d), and γ = (a c)(b d), chose the FALSE alternative:

1. αβ = (a)(b c d);
2. βα = (a c d)(b); 
3. αγ = (a c d b); 
4. γα = (a d b c); 
5. NDA 

Original idea by: Moacy Barros Correia da Silva
Translation help by : Rafael S. Padilha