Using each of the digits 1, 2, 3, and 4 twice, write out an eightdigit number in which there is one digit between the 1s, two digits between the 2s,
three digits between the 3s, and four digits between the 4s.
Credit: A. Savin
(In reply to
re: computer solution by Ady TZIDON)
I assume that's why there are "only 2 answers".

Posted by Charlie
on 20150826 14:30:25 