five well not really i just wanted to answer it.
Amateur: 3; also five-two min rounds. Pro: 4; 6; 8; 10; 12 no laws against "15" round matches still. Are their 'laws' against 20 r. boxing?? If their are/ those laws are most certainly -regional- and no possible further jurisdiction. Now: are "5" r. boxing matches ever slated? The answer is yes and you WILL SEE them in records if you keep searching long enough. I have seen them many times. Are their ever two round matches slated? again, they do exist in records. Even one round slatted distances are to be found in records. "7" round matches have happened. As have "11" r. matches. Normally it is even number rounds that are used. (note: their are many, many boxing matches happening around the Globe, every month and the numbers would -probably- amaze the average joe on street).
10 rounds
Men's Olympic boxing lasts for 3 rounds of 3 minutes, and the women's lasts for 4 rounds of 2 minutes.
12
165
522 matches in a minimum of 10 rounds. *The number of rounds required for from 512 to 1023 players is 10 rounds (512 = 29)
There are 10 rounds in a championship boxing match... However there has been as many as 110 rounds in years past...
Bouts comprise four rounds of two minutes in the Olympic and Commonwealth Games, and four rounds of two minutes in a national ABA (Amateur Boxing Association) bout, each with a one-minute interval between rounds. Aside from that, bouts are usually three three minute rounds.
I may be wrong, but I think there was no limit on the number or rounds in bare knuckle boxing, so that a match would likely end with a knockout. Boxing gloves and round limits were among several additions intended to make boxing more humane.
none he has'nt boxed in years
60
A heavyweight boxing match takes 12 rounds of 3 minutes each. This is however overlooked if one boxer falls down and stays down for more than 30 seconds.