Answer:
72
Step-by-step explanation:
Remember that 9! = 7! (8)(9)
write Substitute
7!(8)(9) for 9!
7!(8)(9)/ 7!= (8)(9)= 72
Answer: 72
Step-by-step explanation:
By definition, it is important to know that the factorial of a non-negative integer "n" is the product of all positive integers less than or equal to "n". This is expressed with an exclamation symbol (!):
[tex]n![/tex]
Then, the rule for this is the following:
[tex]n! = n *(n-1)![/tex]
Therefore, knowing this, you can evalute [tex]\frac{9!}{7!}[/tex] as following:
[tex]\frac{9*8*7*6*5*4*3*2*1}{7*6*5*4*3*2*1}=\frac{362,880}{5,040}=72[/tex]
