Simple/Basics : Order of precedence of operators - Factorial

[namitaj]

hi,

Can someone please help me confirm the order of precedence of the operators . Is the below correct (highest to lowest). I was a bit confused about Factorials.


Parenthesis
Factorials
Exponentials
Multiplication
Division
Addition
Subtraction

[GMATinsight]

hi,

Can someone please help me confirm the order of precedence of the operators . Is the below correct (highest to lowest). I was a bit confused about Factorials.


Parenthesis
Factorials
Exponentials
Multiplication
Division
Addition
Subtraction

PEDMAS is the only Rule that needs to be followed

Factorial is a function that needs to be solved in isolation for that particular number whose factorial is being taken.

[GMATinsight]

Order of Operations/P.E.M.D.A.S.:

The order is:

P.E.M.D.A.S.
Parenthesis | Exponents | Multiplication | Division | Addition | Subtraction

Perform the operations inside a parenthesis first
Then exponents
Then multiplication and division, from left to right
Then addition and subtraction, from left to right

You can also create a little phrase to memorize, as the sequence:
Please Excuse My Dear Aunt Sally

[ceilidh.erickson]

It's unusual for a factorial to be used in combination with other operations; usually it's just used on its own. However, if you saw something like:
3 + 4!(5 - 2) - 1
Just treat the factorial as a special expression of MULTIPLICATION:
3 + 4*3*2*1(5 - 2)

Then, follow standard PEMDAS rules:
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction