a) On doit coder la lettre E par V.
b) A => D
B => O
C => Z
D => K
E => V
F => G
G => R
H => C
I => N
J => Y
K => J
L => U
M => F
N => Q
O => B
P => M
Q => X
R => I
S => T
T => E
U => P
V => A
W => L
X => W
Y => H
Z => S
c) znqxpnvfv et xpdeinvfv
d) GEOMETRIE
