Question

gas i ti toate numerele naturale , care impartite la 6 dau catul egal cu restul

Answer 1

n = 6c + r 
n = 6r + r = 7r    r < 6    r ∈ {0,1,2,3,4,5}
n ∈{0,7,14,21,28,35}

Answer 2

n:6=1 rest 1
n=1x6+1
n=7
n:6=2 rest 2
n=2x6+2
n=14
n:6=3 rest 3
n=3x6+3
n=21
n:6=4 rest 4
n=4x6+4
n=28
n:6=5 rest 5
n=5x6+5
n=35
R: nr. sunt 7 ; 14 ; 21 ; 28 ; 35