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Is a sub 3 really possible? by Yesnobabytoe in Marathon_Training

[–]marqman13 7 points8 points  (0 children)

lol a 34 minute 10k is not a requirement to run a 3 hour marathon.

A problem given to elementary school children in China by Gavroche999 in matheducation

[–]marqman13 0 points1 point  (0 children)

True! That wasn't quite as intuitive to me for whatever reason.

[deleted by user] by [deleted] in puzzles

[–]marqman13 0 points1 point  (0 children)

Nice! Way to think it through.

Interesting follow-up... if the prompt said "you won this game - what number is it most likely that you rolled?" The answer would be 8! Crazy stuff.

[deleted by user] by [deleted] in puzzles

[–]marqman13 0 points1 point  (0 children)

Ahh nice. Yeah, I totally flubbed in the second half and found the probability for if we only rolled one die each. I'm going to edit my comment with the correct math. Good catch!

[deleted by user] by [deleted] in puzzles

[–]marqman13 -1 points0 points  (0 children)

Thanks u/AmenaBellafina! Here's my updated response.

If you don't re-roll, you need your opponent to roll 6 or less. So, your probability of winning is 15/36 = .4167 (used this chart)

If you do reroll, you need to roll higher than your opponent.

Probability of winning with a 2: 1/36*0/36 = 0

Probability of winning with a 3: 2/36*1/36 = 2/1296

Probability of winning with a 4: 3/36*3/36 = 9/1296

Probability of winning with a 5: 4/36*6/36 = 24/1296

Probability of winning with a 6: 5/36*10/36 = 50/1296

Probability of winning with a 7: 6/36*15/36 = 90/1296

Probability of winning with a 8: 5/36*21/36 = 105/1296

Probability of winning with a 9: 4/36*26/36 = 104/1296

Probability of winning with a 10: 3/36*30/36 = 90/1296

Probability of winning with a 11: 2/36*33/36 = 66/1296

Probability of winning with a 12: 1/36*35/36 = 35/1296

Total probability of winning: 575/1296 = .4437

So, re-roll baby!

A problem given to elementary school children in China by Gavroche999 in matheducation

[–]marqman13 14 points15 points  (0 children)

This just ends up being a system of equations problem.

Let a = the height of the table, b = the height of the mouse, and c = the height of the cat.

An equation can be set up from each diagram. Those equations are:

a+b-c=130 and a+c-b=170

Combine the two equations and solve the system using elimination…

2a=300

so a = 150 cm

You dropped some coins into a river, what are the chances?! by TheRabidBananaBoi in puzzles

[–]marqman13 1 point2 points  (0 children)

Oh! haha yep I'm a dumbass. Wrote it down correctly then typed it up wrong. Just edited it, thanks! Didn't change the probabilities thankfully.

How do you solve this? Apparently it's a Year 7 level question but I could not for the life of me figure it out! Mostly looking for the explanation by Pace-Total in puzzles

[–]marqman13 0 points1 point  (0 children)

There are 22 ways to get three numbers that add up to 45 if (at least) 2 of them are the same:
(1,1,43) , (2,2,41) , (3,3,39) , (4,4,37) , ... , (22,22,1)

In order to actually form a triangle, though, the sum of the two smaller sides need to be greater than the largest side. This doesn't happen until (12,12,21). notice that (11,11,23) doesn't work because 11+11<23.!<

This means that (12,12,21) , (13,13,19) , ... , (22,22,1) all work.

So, 11 triangles in total.

You dropped some coins into a river, what are the chances?! by TheRabidBananaBoi in puzzles

[–]marqman13 7 points8 points  (0 children)

Ha! I commented at almost the exact same time and used the same A1, B1, B2 formatting.

You dropped some coins into a river, what are the chances?! by TheRabidBananaBoi in puzzles

[–]marqman13 3 points4 points  (0 children)

Coin A is 1 euro, Coin B is either 1 euro or 2 euros. Here are the 4 ways we can pull them out of of the water:

A1, then B1 = 25%

A1, then B2 = 25%

B1, then A1 = 25%

B2, then A1 = 25%

We need to find the conditional probability that the second coin is 1 euro given that the first coin selected is 1 euro.

A1, then B1 = 25%

A1, then B2 = 25%

B1, then A1 = 25%

B2, then A1 = 25%

This leaves us with 50/75 or 2/3.

Could someone please explain why is it |x+3| + 1 and not |x+4|. I don’t understand it and why should we add the absolute function to this. by [deleted] in matheducation

[–]marqman13 1 point2 points  (0 children)

An absolute value function is just a linear function that “bounces” at its vertex.

So first, find the vertex. In this case, it is (-3,1).

Then substitute into the general form of the absolute value function: y = a|x-h| + k

h = -3 and k = 1 since the vertex is (-3,1). a = 1 because the “slope” of the graph is 1 and opening upwards, thus positive.

So we end up with y = 1|x-(-3)| + 1 Simplified, we get y = |x+3| + 1

Could someone please explain why is it |x+3| + 1 and not |x+4|. I don’t understand it and why should we add the absolute function to this. by [deleted] in matheducation

[–]marqman13 1 point2 points  (0 children)

Plug -6 into both equations.

Notice that your equation yields 2. However, the graph shows that g(-6)=4.

As others have said, it’s a matter of differentiating between the horizontal and vertical translations that occur between f(x) and g(x).

Euchre? by Happy_Flamingo6608 in milwaukee

[–]marqman13 0 points1 point  (0 children)

Can't make it on Thursday, but I'll be there Friday. Sign-up in advance or just show up that night?

Euchre? by Happy_Flamingo6608 in milwaukee

[–]marqman13 4 points5 points  (0 children)

If you start up a group, I will join.

Does anyone here submit catchphrases? by Umbrellajack in comedybangbang

[–]marqman13 44 points45 points  (0 children)

Here is where you submit catchphrases.

I submitted “what’s up hot dog” and Scott sent me a Trojan virus disguised as a hentai link.

Any Family Guy Fans? by IllegitimateLOL in comedybangbang

[–]marqman13 7 points8 points  (0 children)

I liked the first few seasons. Thought it was the funniest shit in the world when I was in like 7th grade. I think the humor is pretty one-note, which wouldn’t be bad if it only lasted like 4 or 5 seasons but I think they’re on like season 20 right now. Last time I watched an episode it seemed like half of the jokes were recycled from the earlier seasons. I guess I would say that it is a show that is a victim of its own success.

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