Question

Evaluate 9!/7! PLEASE I NEED HELP

Answer 1

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 (!):

$n!$

Then, the rule for this is the following:

$n! = n *(n-1)!$

Therefore, knowing this, you can evalute $\frac{9!}{7!}$ as following:

 $\frac{9*8*7*6*5*4*3*2*1}{7*6*5*4*3*2*1}=\frac{362,880}{5,040}=72$

Answer 2

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