Răspuns:
1) [3,4]=1
[2,4,8]=2
[10,15,30]=5
[2,4,5]=1
[20,40,50]=2
[4,8,16]=2
[12,24,36]=2
[4,6,12]=2
2) a) [a,b]=8 => a=2,b=8
b) [A,b]=13=> a=1,b=13
c) [A,b]=24=>a=6,b=8
d)[A,b]=35=>a=5,b=7
3)
La toate 2 fiindcă toate sunt nr pare.