salut qui peut m'aider svp je galère ​

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