Un nombre de 6 chiffres commence à gauche par le chiffre 1. Si on transporte le 1 à droite, le nouveau nombre ainsi obtenue est le triple du premier. Quel est l

Bonsoir,
142857 est la seule solution.

DIM a AS INTEGER, b AS INTEGER, c AS INTEGER, d AS INTEGER, e AS INTEGER, f AS INTEGER
DIM w1 AS STRING, w2 AS STRING
DIM n1 AS LONG, n2 AS LONG
w1 = SPACE$(6)

MID$(w1, 1, 1) = "1"
FOR b = 0 TO 9
    MID$(w1, 2, 1) = CHR$(48 + b)
    FOR c = 0 TO 9
        MID$(w1, 3, 1) = CHR$(48 + c)
        FOR d = 0 TO 9
            MID$(w1, 4, 1) = CHR$(48 + d)
            FOR e = 0 TO 9
                MID$(w1, 5, 1) = CHR$(48 + e)
                FOR f = 0 TO 9
                    MID$(w1, 6, 1) = CHR$(48 + f)
                    n1 = VAL(w1)
                    w2 = MID$(w1, 2, 5) + MID$(w1, 1, 1)
                    n2 = VAL(w2)
                    IF n2 = 3 * n1 THEN
                        PRINT w1, w2
                    END IF
                NEXT f
            NEXT e
        NEXT d
    NEXT c
NEXT b

END