mystery number Comment Submitted by Anonymous on December 18, 2012. Without taking the hint into account, there are two more numbers satifying condition 1: 1 : sum of digits is 1 and 1 * 1 = 1 81 : sum of digits is 9 and 9 * 9 = 81 Neigther of them satifies the second condition. Reply
Submitted by Anonymous on December 18, 2012.
Without taking the hint into account, there are two more numbers satifying condition 1:
1 : sum of digits is 1 and 1 * 1 = 1
81 : sum of digits is 9 and 9 * 9 = 81
Neigther of them satifies the second condition.