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# Weekly Challenge

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

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## Challenge #88: Counting Combinations

8 - Asteroid

Good Exercise !! Learned more about the cross tab and transpose.

7 - Meteor

Attached is my solution.

8 - Asteroid

Here is my solution. 😉

7 - Meteor

My solution:

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8 - Asteroid

Number 20

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8 - Asteroid
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Solution Attached

8 - Asteroid

Sharing my solution, thanks for the challenge.

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7 - Meteor

15 - Aurora

Hi,

Sharing my solution.

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8 - Asteroid

My first attempt to solve this I was going to use binary math:

I had columns set up, 1 for each of the 15 product types, and I was planning to just sum the values of the columns to get a string like : "001001001001001" to represent which products were bought.

Unfortunately I realised that binary math isn't a thing (!!!) and I realised there was an easier way to do this!

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Much easier to use the built-ins Tools this way