?? ???240??,+21????????????????,??
????:1???????:?????????
2???????????
3???????????
4??????????
5????????
?????????????(12??17?)???????????????????,12??17???????????????,????72??????????????????144?????240?(10????????????),??21?????????????,?????
????????????????????????????????????????????????????54???,????????????(??),????24?????(??????????????)60??,?240????
?21??:
1.??????
2.???????
3.??????????
4.?
5.???
6.??????????????
7.??????????
8.???
9.????????????
10.???
11.??
12.?????
13.?
14.????????
15.??
16.????
17.????????????
18.?
19.????????????
20.???????????????
21.??
????,??39????60?????
?????????????240??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????19??????????????(??????????????????)?????????????????????5????,??24??(??????????????)?
??5??:
???????????3??
?????
?????
?????:
???????????3??????????
??????????????????????????????????????????????????????????????????12??
??24??(?????????????????)??
?????????????240???
???????????54??????????????????:
??(40??):?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????;
?(6??):??????????????????????????????????????;
???(2??):??????????;
??(6??????????):????????????????????
??????????,??????3?,??(??)???????
??????240??????(??)??,???,?????
??,??????60????,??,????????????????,??????????
240??
(??? ?? ?)
???:???