GIVING AWAY A MEDAL:
Use Euler’s Formula to find the missing number.
Faces: 19
Vertices: 11
Edges: ?
A) 29
B) 28
C) 27
D) 31

Question

GIVING AWAY A MEDAL:
Use Euler’s Formula to find the missing number.
Faces: 19
Vertices: 11
Edges: ?
A) 29
B) 28
C) 27
D) 31

anonymous · Answer

@iGreen  Do you know what this one is?

igreen · Answer

No. I never heard of Euler's Formula.

Sorry.

anonymous · Answer

Thanks anyways.

mathmath333 · Answer

$\large euler's ~~formula~~ (f+v-e=2)$

igreen · Answer

Oh, well..

Given what @mathmath333 said:

I'm betting f = faces, v = vertices, and e = edges.

anonymous · Answer

Yes.

igreen · Answer

Plug in what you know:

19 + 11 - e = 2

Add:

30 - e = 2

Subtract 30 to both sides:

-e = 32

Multiply -1 to both sides:

e = -32

igreen · Answer

Okay, I did something wrong..nevermind. xD

anonymous · Answer

Lol, thats okay. You tried. I have absolutely no idea how to do these.

mathmath333 · Answer

sry 28 lol

anonymous · Answer

Thank you.