I need help on a question!!! someone please helppp:/!! My math teacher is foreign so he has a strong accent and I does not really know how to explain well!! I am stuck on a certain section of probability...please help!!

Question

anonymous · Answer

What is the question?

anonymous · Answer

A shelf in the STAPLE store contains 50 colored ink cartridges for a particular ink-jet printer. Eight of the cartridges are defective. If a customer selects 5 cartridges at random from the shelf; in how many ways the customer can select under the following situations: a) Exactly two cartridges are defective? b)at most one cartridge is defective?

anonymous · Answer

Ok Im back

anonymous · Answer

What grade are you in?

anonymous · Answer

ahhh you are offline. Message me if you come back

anonymous · Answer

freshmen and im here

anonymous · Answer

Ok  I am assuming that every cartridge is unique and has its own identity, I am not sure if we should be solving like this buttt this what I am assuming
There are 8 defective and 42 in working order inkjets

#1)Selects 2 defective inkjets and 3 Regular inkjets
 soo For the first one we choose is defective and there are 5 choices
The second one we choose is also defective but there are only 4 choices since we already picked one defective so there are only 4 left
Now The third choice is in working order and there are 42 choices to choose from
The fifth selection is also in working order but there are only 41 choices since one regular inkjet has been already taken off the shelf
The last selection is in working order too but there are only 40 choices since 2 regular inkjets have been taken of the shelf

So there are 5*4*42*41*40 options in how the customer can select cartridges where 2 are defective and 3 are in working order

anonymous · Answer

so this means what exactly?

anonymous · Answer

ughhh

anonymous · Answer

DO you want the answer or the explanation cuz I can just give you the answer if you would like

anonymous · Answer

No explanation is needed so I can understand...

anonymous · Answer

So I multiply those numbers out right?

anonymous · Answer

Yes

anonymous · Answer

I wanna give you an easier example so you can understand this topic but give me a sec

anonymous · Answer

ok thank you

anonymous · Answer

Ok lets say there are 5 people in the room and only 3 chairs

anonymous · Answer

ok

anonymous · Answer

So how many different ways can we have people sitting on a chair.
Each chair is specific

anonymous · Answer

So on chair #1 There are 5 people so there is a possibility of 5 different people sitting on that chair
Do you agree with this?