Apparently, this user prefers to keep an air of mystery about them.
2 How many four digit numbers, in which all digits are distinct, contain at least one of 2 and 4 and have no leading zeros? Mar 26 '14
1 Winding Number of a Circle Oct 23 '15
0 Greatest power of 2 less than N? Mar 29
0 What is the probability that, when 3 couples are seated around a circular table, no couple sits together? May 7 '14
0 Chebyshev Polynomials of 1/n Sep 29 '15