Question

大神帮帮我

http://zhidao.baidu.com/question/1543888574350267027.html

Answer 1

我好郁闷-.-

1. Find the least common multiple of 15 and 45.
   2. Find the least common multiple of 45 and 85.
   3. Find the least common multiple of 56 and 26.
   4. Find the least common multiple of 75 and 15.
   5. Find the least common multiple of 33, 11 and 55.
   6. Find the least common multiple of 35 and 15.
   7. Find the least common multiple of 28 and 32.
   8. Find the least common multiple of 9, 45 and 81.
   9. Find the least common multiple of 21, 45 and 6.
   10. Find the least common multiple of 12 and 16.

最小公倍数(Least Common Multiple)

15, 45

最大公因数 = 15
最小公倍数 = 45
15 = 3 * 5
45 = 3 * 15 = 3 * 3 * 5 = 3^2 * 5

45, 85
最大公因数 = 5
最小公倍数 = 765
45 = 3 * 15 = 3 * 3 * 5 = 3^2 * 5
85 = 5 * 17

56, 26
最大公因数 = 2
最小公倍数 = 728
56 = 2 * 28 = 2 * 2 * 14 = 2 * 2 * 2 * 7 = 2^3 * 7
26 = 2 * 13

75, 15
最大公因数 = 15
最小公倍数 = 75
75 = 3 * 25 = 3 * 5 * 5 = 3 * 5^2
15 = 3 * 5

33, 11, 55
最大公因数 = 11
最小公倍数 = 165
33 = 3 * 11
11 = 11
55 = 5 * 11

35, 15
最大公因数 = 5
最小公倍数 = 105
35 = 5 * 7
15 = 3 * 5

28, 32
最大公因数 = 4
最小公倍数 = 224
28 = 2 * 14 = 2 * 2 * 7 = 2^2 * 7
32 = 2 * 16 = 2 * 2 * 8 = 2 * 2 * 2 * 4 = 2 * 2 * 2 * 2 * 2 = 2^5

9, 45, 81
最大公因数 = 9
最小公倍数 = 405
9 = 3 * 3 = 3^2
45 = 3 * 15 = 3 * 3 * 5 = 3^2 * 5
81 = 3 * 27 = 3 * 3 * 9 = 3 * 3 * 3 * 3 = 3^4

21, 45, 6
最大公因数 = 3
最小公倍数 = 630
21 = 3 * 7
45 = 3 * 15 = 3 * 3 * 5 = 3^2 * 5
6 = 2 * 3

12, 16
最大公因数 = 4
最小公倍数 = 48
12 = 2 * 6 = 2 * 2 * 3 = 2^2 * 3
16 = 2 * 8 = 2 * 2 * 4 = 2 * 2 * 2 * 2 = 2^4