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2014-09-12T19:25:15+02:00
Exercice - 19 :

a) 15 : 1, 3, 5, 15
24 : 1, 2, 3, 4, 6, 8, 12, 24

PGCD ( 24 ; 15 ) = 3

b) 12 : 1, 2, 3, 4, 6, 12
56 : 1, 2, 4, 7, 8, 14, 28, 56

PGCD ( 56 ; 12 ) = 4

c) 40 : 
1, 2, 4, 5, 8, 10, 20, 40
75 : 
1, 3, 5, 15, 25, 75

PGCD ( 75 ; 40 ) = 5

Exercice - 20 :

1) a) 100 : 
1, 2, 45, 10, 20, 25, 50, 100

b) 32 : 
1, 2, 4, 8, 16, 32

c) 55 : 
1, 5, 11, 55

d) 13 : 
1, 13

2) a) PGCD ( 100 ; 32 ) = 4

b) PGCD ( 100 ; 55 ) = 5

c) PGCD ( 32 ; 13 ) = 1