For this case, a number is defined ugly if it has prime factors consisting of only elements of x.
Find the nth ugly number.
so the ans is 15.
Unlike the previous two "ugly()" problems, in this one it appears that the number "1" is not considered ugly.
Knight's Tour Checker
Vectorize the digits of an Integer
Wind Chill Computation
Create a vector
Is it column vector?
Abelian Sandpile - 01
The Dark Knight
ZigZag - 02
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