II significa 2 en símbolos matemáticos. ¿Cómo representa 3?

I, 1

II, 2

III, 3

IV, 4

V, 5

VI, 6

VII, 7

VIII, 8

IX, 9

X, 10

XI, 11

XII, 12

XIII, 13

XIV, 14

XV, 15

XVI, 16

XVII, 17

XVIII, 18

XIX, 19

XX, 20

XXI, 21

XXII, 22

XXV, 25

XXIX, 29

XXX, 30

XXXI, 31

XXXIV, 34

XXXV, 35

XXXIX, 39

XL, 40

L, 50

LI, 51

LV, 55

LX, 60

LXV, 65

LXX, 70

LXXX, 80

XC, 90

XCIII, 93

XCV, 95

XCVIII, 98

IC, 99

C, 100

CC, 200

CCC, 300

CD, 400

D, 500

DC, 600

DCC, 700

DCCC, 800

CM, 900

M, 1000

MC, 1100

MCD, 1400

MD, 1500

MDC, 1600

MDCLXVI, 1666

MDCCCLXXXVIII, 1888

MDCCCXCIX, 1899

MCM, 1900

MCMLXXVI, 1976

MCMLXXXIV, 1984

MCMXC, 1990

MM, 2000