Răspuns:
Explicație pas cu pas:
a = 1/2· (2/3)²· (3/4)³·(4/5)⁴· m ; m ∈ N*
a ∈ N
a = [(1·2²·3³·4⁴):(2·3²·4³·5⁴)]· m
a = [(2²⁻¹·3³⁻²·4⁴⁻³): 5⁴]·m
a = (2·3·4:625)·m
a = (24/625)·m =>
m = 625 => a = 24
