I need an urgent answer and explanation plz?
404449
n!=1*2*3*...*n\nC(n,k) = n! / ( k! * (n-k)! )\nit tells you in hom many different ways you can pick k items out of n. your textbook says why.  \n\na. C(7,4) -direct application, 4 good ones out of 7=10-3\nb. C(7,2)*C(3,2) 2 goods ones, 2 bad ones\nc. C(7,4) + C(7,3)*C(3,1) + C(7,2)*C(3,2) \n all 4 good, or 3 good+ 1 bad, or 2 good+2bad
390031
what????????? i cant understand
760873
Your question is a little unclear.  Could you elaborate a bit?
1010209
don't understand question
1183316
Please explain. The question doesn't make sense  !
897584
Please try 2 explain  or contact me.
801297
Need more details please.
219905
i dint get the question, can u elaborate a bit ?
64205
I'm not sure I understand the question.  Add some detail?
711568
i do not understand your question, can you clarify???
222446
just ask your question here and I'm sure someone will be able to clarify it for you. Time to sleep for me.\n\nI'll check your questions tomorrow to see if I can help.
233280
explain more please to give u help.......
210976
Trouble understanding your question. You need to add some details concerning what you're talking about.
1162175
Question is confusing and vague. Please clarify.
600411
Can't answer in detail unless you explain what the crisis is. If you need help right now call 911
158314
I'd like to help with your question, but can't understand it.
300686
I dont understand the Question?