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u/DonutHoleTechnician

r/askmath r/simpsonsshitposting r/fermentation r/Norway
▲ 0 r/askmath

Birthday paradox with a twist

I understand the classic birthday paradox problem, but how does the math change if I have a room of 34 people and I want to know the probability that five of them share the same exact birthday, like all 5 are born on June 15th? This is different in that I'm not asking the probability that 5 people with different birthdays each find a match in the room.

I'm not sure how to formulate the probability of the 5 June 15th birthdays NOT happening and then subtracting from 1.

Thank you!

Edit: sorry, the date is arbitrary. The odds of 5 people sharing ANY date is what I'm after.

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u/DonutHoleTechnician — 2 days ago
▲ 3 r/fermentation

Soda containment: too paranoid?

I'm making my first soda (blood orange) from my first ginger bug and am worried about a bottle bomb happening in the next 10 hours, since my kitchen is pretty warm this time of year. Anyone else try using a cooler, just in case? Am I being paranoid?

u/DonutHoleTechnician — 26 days ago
▲ 142 r/fermentation

Worms in fruit vinegar

I live in San Diego and picked some madrones (Strawberry Tree Arbutus unedo) this morning from some neighborhood trees. I mashed them to make vinegar and a few hours later saw what looked like worms/larvae floating. I pulled a couple out and zoomed in.

Question: can I continue as is and just filter them out in two weeks after the main fermentation is done? Any concerns?

I eat these fruits off the trees all the time so I'm sure I've already eaten many of these worms over the years.

u/DonutHoleTechnician — 30 days ago