Question

Aflati toate numerele care impartite la 5 dau catul 11

Answer 1

5 x 11 =55

55:5=11

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Answer 2

x:5=11  (rest 0)
x=55 
rest =1⇒ x=5*11+1=56
rest=2⇒x=5*11+2=57
rest=3⇒x=*11+3=58
rest=4 ⇒x=59
rest=5⇒x=60
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rest =10⇒x=65

x∈{56,57,58,59,60,61,62,63,64,65}