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# Weekly Challenge

Solve the challenge, share your solution and summit the ranks of our Community!

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## Challenge #25: Creating Merchant Combos

8 - Asteroid

my solution

8 - Asteroid

Hi,

I created the solutions, but my results are slightly different. the reason is easy: According to Use Case we should understand correlation of merchants, so we need also information about those customers who visit only one merchant. However, I do not understand why we should keep lines with nulls where counts are between 2 and 4.

That's why I my solutions I exclude such situations (which is easy to add).

Spoiler
Solution 1:

Solution 2:

8 - Asteroid

Its not the same order as the solution, but the same combinations are present.

Spoiler
8 - Asteroid

Here's my solution

8 - Asteroid

Challenge Completed

11 - Bolide
Spoiler

What a weird challenge, found an easy way to do it apart from the (useless imo) nulls, so left it there.

9 - Comet

My solution is much easier than the one provided.

8 - Asteroid
Spoiler

11 - Bolide

My solution.

8 - Asteroid

done !