Répondre :
(1-1/6)(1-2/6)(1-3/6)(1-4/6)(1-5/6)(1-6/6)
=5/6 x 4/6 x 3/6 x 2/6 x 1/6 x 0
=0
donc (1-1/6)(1-2/6)(1-3/6)(1-4/6)(1-5/6)(1-6/6)/(1-1/6)=0
=5/6 x 4/6 x 3/6 x 2/6 x 1/6 x 0
=0
donc (1-1/6)(1-2/6)(1-3/6)(1-4/6)(1-5/6)(1-6/6)/(1-1/6)=0