Lucy Furr must supply 4 different bags of chips for a party. She finds 13 varieties at her local grocer. How many different selections can she make?

715

Step-by-step explanation:

What we must do is apply the concept of combinations, which is the following formula:

nCr = n! / r! * (n - r)!  

Where 'n' represents the number of elements available and 'r' represents the number of elements chosen.

In this case, n equals 13 and r equals 4.

replacing in the formula:

13C4 = 13! / 4! * (13 - 4)!

13C4 = 13! / (4! * 9!)

13C4 = 715

Number of selections she can make = 715

Step-by-step explanation:

Number of bags she must supply = 4

Number of varieties = 13

Number of selections =

Number of selections she can make = 715

the answer to this question is yes

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last graph i believe

step-by-step explanation:

worked it out i believe