Find all integers n greater than nine that satisfy
the following:

The integer formed by inserting the zero digit
between the units and the tens digits of n is
a multiple of n.   

All numbers that have 0 as the units digit qualify.

There are  some other numbers like 15, 18 since 105=15*7,  108=18*6 

-the  above just  seems evident.

**may return later

Posted by Ady TZIDON on 2016-03-21 11:19:53