Question

Na= {an: ne N}, then N3nN4=​

Answer 1

Answer:

Na={an:n∈N}  

The natural number set N is given by:

N={1,2,3,4,⋯}  

N6={6×1,6×2,6×3,6×4,⋯}  

⟹N6={6,12,18,24,30,36,42,48,⋯}  

Similarly,

N8={8,16,24,32,40,48,56,64,⋯}  

N6∩N8={24,48,⋯}  

N6∩N8  contains the multiples of 24 = LCM(6,8).

In general,

Na∩Nb={n×LCM(a,b):n∈N}

hope this helps you