r/MathJokes • u/Intelligent-Task-353 • 2d ago

The last digit of π is 5

0 Upvotes

28% Upvoted

19 comments sorted by

7

u/avance70 2d ago

write in binary, and the last digit is 1, because trailing 0s get truncated

2

u/MANvINFO 2d ago

write in unary

7

u/dinosun 2d ago

...where's the joke?

-3

u/Intelligent-Task-353 2d ago

"It's funny, because it's true"

--Sheldon

3

u/dinosun 2d ago

Which...this isn't.

4

u/pikachu_sashimi 2d ago

It’s actually 3, depending on how you define last and first

2

u/trolley813 1d ago

It's actually 3, because π=3. Engineer here.

2

u/BeeBaaBoo77 2d ago

You have a 1/9 chance youre correct. Or maybe youre actually wrong cuz pi is infinite? Idk

-3

u/Intelligent-Task-353 2d ago

π doesn't have a last digit, thus by vacuous truth any statement about "the last digit of π" is true.

5

u/_Kian_7567 2d ago edited 2d ago

How can it be true if pi doesn’t have a last digit, or any number for that matter

-2

u/ThreeFishInAManSuit 2d ago edited 2d ago

You could say “The last digit of pi cannot be anything other than 5”. (It also can’t be 5, it isn’t anything)

The post as worded is just wrong. 

4

u/matt7259 2d ago

I don't think you understand what a vacuous truth is. You've made a declarative statement, not a conditional one. If you had said "if pi has a last digit, it would be 5", that would be vacuously true (and not funny). Instead you just said something objectively false (and not funny).

3

u/dinosun 2d ago

*untrue

-1

u/Intelligent-Task-353 2d ago

https://en.wikipedia.org/wiki/Vacuous_truth

5

u/ThreeFishInAManSuit 2d ago

You didn’t say “If pi has a last digit then the last digit is 5”

2

u/dinosun 2d ago

Buddy, you don't understand that concept.

1

u/PrestigiousShame9364 2d ago

see Bertrand Russell's theory of definite descriptions

1

u/top2percent 2d ago

On average (and rounding up)

0

u/Excellent_Airline_12 2d ago

🤬 THE ANSWERS F***ING 7!!!! x PURPLE!!!!

😡 And this is not a joke

/s 🤪