Raspuns:
k=0,1
2•0+1=1<3
2•1+1=3=3
x=1,3
A={1,3}
k=0,1,2,3
2⁰=1
2¹=2
2²=4
2³=8
x=1,2,4,8
B={1,2,4,8}
x=0,1,2,3,4,5
2⁴=16
2⁵=32
C={0,1,2,3,4,5}
x=1,2,3,4
1³=3
3³=27
4³=64
C={1,2,3,4}
