數學.....唔明呀

2007-07-23 11:48 pm
H.C.F
1. 377,899
2. 703,2442
3. 455,633


L.C.M
1. 533,1435
2. 611,893

*用輾轉相除法呀!
更新1:

*用直式計呀!

回答 (3)

2007-07-26 9:09 am
✔ 最佳答案
H.C.F.


1.

2│899│377│2
 │754│290│
 │───│───│
1│145│ 87│1
 │ 87│ 58│
 │───│───│
2│ 58│ 29│
 │ 58│   │
 │───│   │

Hence (377, 899) = 29

2.

3│2442│703│2
 │2109│666│
 │────│───│
9│ 333│ 37│
 │ 333│   │
 │────│   │


Hence (703, 2442) = 37

3.

 1│633│455│2
  │455│356│
  │───│───│
 1│178│ 99│1
  │ 99│ 79│
  │───│───│
 3│ 79│ 20│1
  │ 60│ 19│
  │───│───│
19│ 19│  1│
  │ 19│   │
  │───│   │

Hence (455, 633) = 1


L.C.M.


1.

2│1435│533│1
 │1066│369│
 │────│───│
2│ 369│164│4
 │ 328│164│
 │────│───│
 │  41│   │

Hence the L.C.M. of 533 and 1435
= (533 × 1435)/(533, 1435)
= 764855/41
= 18655

2.

1│893│611│2
 │611│564│
 │───│───│
6│282│ 47│
 │282│   │
 │───│   │

Hence the L.C.M. of 611 and 893
= (611 × 893)/(611, 893)
= 545623/47
= 11609
參考: My Pure Maths knowledge
2007-07-24 1:13 am
1. 29 | 377 899
13 31

H.C.F. = 29

2. 37 | 703 2442
19 66

H.C.F. = 37

3. H.C.F. = 1


L.C.M.
1. 41 | 533 1435
13 35
L.C.M. = 41 * 13 * 35 = 18655

2. 47 | 611 893
13 19
L.C.M. = 47 * 13 * 19 = 11609
2007-07-24 12:51 am
咩係輾轉相除法?


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原文連結 [永久失效]:
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