Question

ex:7 aflati toate numerele care impartit la 7 dau catul egal cu rest.

Answer 1

8 : 7 = 1 rest 1 
16 : 7 = 2 rest 2
24 : 7 = 3 rest 3 
32 : 7 = 4 rest 4
40 : 7 = 5 rest 5
48 : 7 = 6 rest 6

Answer 2

n:7=c,r=c
r<7 rezulta r=0,1,2,3,4,5,6,
conform teoremei impartirii cu rest
n=7*c+r=7r+c=8*c=8*r
n=8*r rezulta,
n=8*0=0
n=8*1=8
n=8*2=16
n=8*3=24
n=8*4=32
n=8*5=40
n=8*6=48