Question 945214
How many 8 digit numbers are there containing three 6s and five 2s.
<pre>
Choose the positions for the 6's in 8C3 = 56 ways, and place the
2's in the remaining 2 positions.

Answer 56.

Here they all are4:

1.  22222666
2.  22226266
3.  22226626
4.  22226662
5.  22262266
6.  22262626
7.  22262662
8.  22266226
9.  22266262
10.  22266622
11.  22622266
12.  22622626
13.  22622662
14.  22626226
15.  22626262
16.  22626622
17.  22662226
18.  22662262
19.  22662622
20.  22666222
21.  26222266
22.  26222626
23.  26222662
24.  26226226
25.  26226262
26.  26226622
27.  26262226
28.  26262262
29.  26262622
30.  26266222
31.  26622226
32.  26622262
33.  26622622
34.  26626222
35.  26662222
36.  62222266
37.  62222626
38.  62222662
39.  62226226
40.  62226262
41.  62226622
42.  62262226
43.  62262262
44.  62262622
45.  62266222
46.  62622226
47.  62622262
48.  62622622
49.  62626222
50.  62662222
51.  66222226
52.  66222262
53.  66222622
54.  66226222
55.  66262222
56.  66622222

Edwin</pre>