Samantha wants to use her savings of $1150 to buy shirts and watches for her family. The total price of the shirts she bought wa
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Answer:
Step-by-step explanation:
Using n!=n(n-1)(n-2)----1
Value of 6! is
Now, In second case we have to choose two people out of 6 for the photo shoot it will be
Here, n that is total possibilities is 6
And the specific chosen possibility that is r is 2
By using
On substituting the values we get:
Cancel the common terms we we get:
Now, third case is 3 students out of 6 are to be seated in front row it will be
Cancel out the common factors we get;