Challenge #140: Prove the Birthday Paradox!

[Szymon_Czuszek]

Attached my solution below. I found a solution which didn't require a macro, and was much more efficient.

Workflow:

Spoiler

[lwolfie]

Ripped the band-aid off and figured out the macro.  I also started down a more complicated path of using birth day and year vs integer.

[alexnajm]

Done!

[Erin]

That was fun!

Spoiler

workflow: 
workflow
Macro:
batch macro
Results:
results

[RebekaMazuchova]

Nice iterative macro. A bit more challenging one.

[JBevan89]

Spoiler

 I found it good how the graph always changes slightly because of the random function (bit novice of me), but it's good how ultimately to probability is around 50% for 23 people

[Pilsner]

Fun mathematical challenge, here's my solution:

Spoiler

Here's my answer for when it passed the specified milestones:

50%: 23
75%: 32
90%: 41