Interview
Factorial Notation
- Course
- Institution
A brief explanation of Factorial Notation in probability Gr12.
[Show more]
Seller
Follow
kalebroodt
Content preview
Factorial Notation:In the application of the fundamental counting principle we spend a lot of time finding the product
of sequences of decreasing consecutive natural numbers.
i.e 13 × 12 × 11 × 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1
For larger numbers this process gets tiresome, so a shorthand known as factorial notation is used to
condense 13 × 12 × 11 × 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 to 13! which reads as “13
factorial”
Similarly:
5! = 5 × 4 × 3 × 2 × 1
And 𝑛! = 𝑛 × (𝑛 − 1) × (𝑛 − 2) × (𝑛 − 3) × (𝑛 − 4) × … × 1
There is a factorial button on your calculator: Casio FX 82ZA
Above the button 𝑥−1 , in yellow is the text “𝑥! ", to access this function press SHIFT followed
𝑥−1
by
Example:
Evaluate 5! on your calculator.
𝑥−1 =
Press 5 + SHIFT + followed by
The display on your calculator will read 120
∴ 5! = 120
NOTE:
0! = 1
Your calculators only have enough memory to calculate up to 69! Anything higher will return
the message of “Math ERROR”. When asked to work with larger values than 69! The
expression must be simplified first before a calculator can be used.
EXERCISES:
Classroom Mathematics Exercise 13.5 pg 365
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller kalebroodt. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $4.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67474 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now