According to an example (https://algorithms.tutorialhorizon.com/colorful-numbers/) :
Given Number : 3245 Output : Colorful Number 3245 can be broken into parts like 3 2 4 5 32 24 45 324 245. this number is a colorful number, since product of every digit of a sub-sequence are different. That is, 3 2 4 5 (3*2)=6 (2*4)=8 (4*5)=20, (3*2*4)= 24 (2*4*5)= 40
Given Number : 326 Output : Not Colorful. 326 is not a colorful number as it generates 3 2 6 (3*2)=6 (2*6)=12.
It doesn't make sense. What am I missing? It says that PRODUCT of EVERY DIGIT of a SUBSET is DIFFERENT.
But the products for the subsets of 326 are also different since they equal 6 and 12 (as shown in the example above). And 6 != 12.
Hopefully somebody can explain this like I'm 5 to me.
You have missed the fact that $6$ is a substring of $326$ and $6=3\cdot 2$ as Rahul says. I think that is an answer, so I posted it CW.