probability – Lottery Outcomes – Mathematics Stack Exchange

I’m trying to calculate the chance multiple people (https://www.usamega.com/powerball/drawing/2021/1/16) might win second prize in the Powerball lottery and while I can calculate the chance that one might win (1 in 11,688,053.52) I’m not sure how to apply this to multiple winners.

Let’s say ten people win the second prize (match 5 and not Powerball), how would I calculate the likelihood of this occurrence in a field of ~10,000,0000 players?

samsung – How to check existing Android Exchange Domain settings

I am installing my wife’s new phone using Samsung Smart Switch.

It nicely installs all apps, including Outlook, however it does not copy the account settings for her Exchange mail.

I know her Outlook mail address, mail server name and password, but have not been able to find her domain setting in any documentation or in the settings of her old phone (domainusername).

Is there any we of discovering that domain setting on her OLD mobile ?? I have tried to find it, without any luck. And service desk of her work is unavailable during the weekend. Hence my question.

Many thanks,
Albert

magento2 – Linking InsertListings – Magento Stack Exchange

I have two database tables, zones and rules. The rules includes a foreign key to the zones table (i.e. zone_id) and I wish to create an admin form to edit these.

The zone edit form includes the various fields of the zone in one fieldset and an insertListings ui component in another. At the moment the rules listings shows all listings, for every single zone, but I want to limit this to the zone that is being editted.

How do I connect the insertListings to only show the rules associated with the id of the form?

Any help will be appreciated.

PostgreSQL extended statistics – Database Administrators Stack Exchange

I have a 1 TB read-only database where performance is critical. It’s difficult to predict queries since they are dynamically generated by the users (the whole thing is basically a visualization platform atop a large collection of medical studies, and users select what they want to visualize). Queries can often be complex and involve 10+ joins. I recently learned about the extended statistics feature, but I find little information online about when best to use it (other than what’s in the documentation).

The DB is pretty well normalized, but makes extensive use of materialized views which are de-normalized. Is there any performance penalty or other issue with creating extended statistics (dependency and top n) for all pairwise columns? It would result in, say, 500 statistics on some 70 tables. Time for analyze or inserts is not of relevance, only read performance. Also, is there a tool or code snippet to help me do this?

I’m using Postgresql 12 and it’s optimized as far as possible w.r.t. indexing.

Deal – I want to exchange 6000bmf for $6 paypal | Proxies-free

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bitcoin feeless transactions – Bitcoin Stack Exchange

The mobile application cashapp specifically says I can send bitcoin to any address anywhere in the world for free.

Coinbase also says they can do off the network transactions instantly and for free as long as both parties have a coinbase address…how does this work ? Does a miner check these transactions ?

Where does the concept of average transaction fee come into place ?
https://ycharts.com/indicators/bitcoin_average_transaction_fee

Differential equation prove – Mathematics Stack Exchange

I’m starting the differential equation course and I would really appreciate if anyone can help me with ideas solving this prove:

Let a, b:$Ito R$ continuous functions with $I subseteq R$ and $U: I to R$ the solution of the differential equation $u”= a(t)cdot u + b(t)cdot u’$ with $u(t_0)=0$ and $u'(t_0)=1$ for some $t_0$ belonging to $I$. Show that if a>0 then $u$ is increasing in ${t in I: tgeq t_0}$

Is this exchange legitimate? – Bitcoin Stack Exchange

I was sent a discord message with an invitation to an exchange called www.doxxwallet.com. They offered me 0.21 bitcoin as a joining bonus, and I created the account and according to them do indeed have a wallet with .21 bitcoin. In order to withdraw the bitcoin, I have to transfer to the website 0.006 bitcoin and then I can withdraw the entire balance.

This sounds pretty scammy, but I wanted to see if anyone else had heard of them or had a way to verify that this website is legitimate? I have an image of the message I received below.

enter image description here