Quick Check - Factorial Notation

Which of the following represents three factorial?

• 3!

• 3a

• 3?

• 3*

Which of the following represents 4! in expanded form?

• 4+3+2+1

• 4^.3^.2^.1

• 4+5+6

• 4

 $5!$ is equivalent to which of the following expressions?

•  $5!\cdot4!$  

•  $5!\cdot4$  

•  $5\cdot4!$  

•  $\frac{10!}{2!}$  

5! is NOT equal to

• 5 x 4!

• 5 x 4 x 3 x 2 x 1 x 0!

• 5 x 4 x 3! x 2

• 3 x 4 x 5 x 2

 $83\times82\times81\times80\times79$ can also be written as:

•  $\frac{83!}{78!}$  

•  $\frac{83!}{79!}$  

•  $\frac{78!}{83}$  
  

•  $8378$  

Evaluate $\frac{100!}{99!}\$ 

• 100

• 99

• 199

• 9900

simplify this

• 1

• a

• a+1

• 1/a

Tags

CCSS.HSA.APR.D.6

CCSS.HSA.APR.D.7

 $n\Pr\ =\$  

•  $\frac{n!}{r!}$  

•  $\frac{n!}{\left(n-r\right)!}$  

•  $n\times r$  

•  $n!$  

 $9\times8\times7\times6=$  

•  $9^P4$  

•  $9^P6$  

•  $\frac{9!}{4!}$  

•  $\frac{9!}{6!}$  

And finally...

 $72\ \times\ 7!\ =$  

•  $9!$  

•  $9\times8\times7$  

•  $504$  

•  $504!$