- 21:15, 11 March 2009 (diff | hist) . . (+2) . . 3. How many words of length 7 contain both "a" and "b" (current)
- 21:15, 11 March 2009 (diff | hist) . . (+380) . . 3. How many words of length 7 contain both "a" and "b"
- 10:01, 22 February 2009 (diff | hist) . . (+71) . . MA 375 Spring 2009 Walther Homework 5 Number 38 (current)
- 17:01, 11 February 2009 (diff | hist) . . (+102) . . MA 375 Spring 2009 Walther Homework 4 Number 54
- 13:41, 4 February 2009 (diff | hist) . . (+89) . . 31
- 02:14, 1 February 2009 (diff | hist) . . (+263) . . 40 (current)
- 15:15, 24 January 2009 (diff | hist) . . (+62) . . 4.1/20
