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1 la 0 x 1 la1 x 1 la 2 x.....x 1 la 20 .......x=ori

Răspuns :

      
[tex] 1^{0} * 1^{2} * 1^{3} * .....* 1^{20} = 1*1*1 *..... * 1 = \boxed {1}[/tex]