Using each of the digits 1, 2, 3, and 4 twice, write out an eight-digit 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 2015-08-26 14:30:25