Wie was de ontdekker van de negenproef?L & K
28-10-2002
"Casting out nines was transmitted to Europe by the Arabs, but was probably an Indian invention and is therefore sometimes also called "the Hindu check." The procedure was described by Fibonacci in his Liber Abaci (Wells 1986, p. 74)."
BRON
wh
28-10-2002
#5006 - Getallen - Leerling bovenbouw havo-vwo