J'ai rien compris si kelkun comprend, il a les 20 points!! Merci d'avance

1 metre = 100 cm

1er rebond : 100x3/4 = 300/4 = 75 cm
2eme rebond :  75x3/4 = 225/4 = 56.25 cm
3eme rebond : 56.25 x3/4 = 168/75/4 = 42.19cm
4eme rebond : 42.19 x3/4 = 126.57/4 = 31.64 cm
5eme rebond : 31.64x3/4 = 94.92/4 = 23.73 cm