## The Small Vampire NumbersHere are the seven four-digit vampire numbers: 1) 15 x 93 = 1,395 2) 21 x 60 = 1,260 3) 21 x 87 = 1,827 4) 27 x 81 = 2,187 5) 30 x 51 = 1,530 6) 35 x 41 = 1,435 7) 80 x 86 = 6,880 There are 4,095 possible two-digit x two-digit non-duplicate possible multiplications. Since only 7 are vampire results, we find that only 0.2% of the possible numbers are vampires. Since there are only 148 (true) six-digit vampire numbers, and 405,450 possibilities, only 0.04% are vampires! The percentage shrinks, but there are a LOT of big numbers out there! |