=
1 |
(n+1)+1 |
1 |
(n+1)+2 |
1 |
(n+1)+3 |
1 |
3(n+1) |
1 |
n+1 |
1 |
n+2 |
1 |
n+3 |
1 |
3n |
=
1 |
3n+1 |
1 |
3n+2 |
1 |
3n+3 |
1 |
n+1 |
=
1 |
3n+1 |
1 |
3n+2 |
2 |
3n+3 |
故選C.
1 |
n+1 |
1 |
n+2 |
1 |
n+3 |
1 |
3n |
1 |
3n+1 |
1 |
3n+2 |
1 |
3n+1 |
1 |
3n+2 |
2 |
3n+3 |
1 |
3n+1 |
1 |
3n+2 |
1 |
(n+1)+1 |
1 |
(n+1)+2 |
1 |
(n+1)+3 |
1 |
3(n+1) |
1 |
n+1 |
1 |
n+2 |
1 |
n+3 |
1 |
3n |
1 |
3n+1 |
1 |
3n+2 |
1 |
3n+3 |
1 |
n+1 |
1 |
3n+1 |
1 |
3n+2 |
2 |
3n+3 |