SOLUTION: Formulas: nCr = n! / r!(n-r)! Order not Imp..... nPr = n! / (n-r)! Order is Imp.... Problem 1 (2 Points) You are at a mountain resort and wish to dine a

Question 361820: Formulas: nCr = n! / r!(n-r)! Order not Imp.....

nPr = n! / (n-r)! Order is Imp....

Problem 1 (2 Points)

You are at a mountain resort and wish to dine at three different restaurants. A total of 8 restaurants are available, but only two of the eight serve sea food. However, you as a diner do not know that only two restaurants serve sea food. Find the number of ways in which you can select a restaurant for dining so that at least one of the selected restaurants will serve seafood. Assume that the order of selection is not important.
at least 1= 1 or more = 1 0r 2 or 3 or 4 or 5 or 6 or 7 or 8 = 8C1+8C2+ 8C3 +8C4+8C5+8C7+8C8= 255
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
2C2+(2C1)(6C1)
=1+2*6
=1+12
=13 the number of ways in which you can select a restaurant for dining so that at least one of the selected restaurants will serve seafood.
.
At least you are trying. You will get it. It's not brain surgery.
.
Ed
RELATED QUESTIONS
ncr=220 and npr=1320 find n and... (answered by edjones)

NPR = 336 and ncr = 56 Find r and... (answered by fractalier)

given nPr=3024 and nCr=126 find n and... (answered by ikleyn,greenestamps)

Please help me to solve this Qeustion(1) Prove that nCr=n+1Cr-nCr-1 and Qeustion (2)... (answered by math_helper)

If nPr = 336 and nCr = 56, determine what n and r are. (answered by fcabanski)

prove that:... (answered by venugopalramana)

Show that r(nCr) = n[(n-1)C(r-1)] (answered by Edwin McCravy)

nCr/nCr-1 = (n-r+1)/r prove it (answered by Edwin McCravy)

Use the fact that nCr = n!/(n-r)!r! to show that: a.). nCr = nCn-r b.)... (answered by Edwin McCravy)