ksmytaniuk
New member
- Joined
- Mar 6, 2016
- Messages
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First, I'd like to apologize if my post is in the wrong section of this forum. I'm still getting used to all the subforums here.
Anyways, I'm a student that's been out of school for 6 years but am now taking a math upgrade class to apply for a post-secondary course. I live in Saskatchewan, Canada and our curriculum has been modified so there is only 1 math level required for post-secondary application. What I'm taking is called Foundations of Mathematics 30 Level. It includes pre-calculus.
The unit I'm working on right now deals with Permutations and Factorial Notation. I'm struggling with the concept of simplifying notations within algebraic equations. Below I've posted the current assignment I'm working on. Any help or insight will be greatly appreciated!
. . . . .Section 4.2 and 4.3 Handin Assignment
1. Solve \(\displaystyle \, \dfrac{(n\, +\, 3)\, (n\, +\, 2)!}{(n\, +\, 1)!}\, =\, 30\)
My work:
. . . . .\(\displaystyle \color{blue}{\dfrac{(n\, +\, 3)\, \bigg[(n\, +\, 2)\, (n\, +\, 1)\bigg]}{(n\, +\, 1)}\, =\, 30} \)
. . . . .\(\displaystyle \color{blue}{(n\, +\, 3)\, (n\, +\, 2)\, =\, 30}\)
. . . . .\(\displaystyle \color{blue}{n^2\, +\, 5\, =\, 30}\)
2. How many different permutations are there of 5 objects from a set of 7 different objects, if repetition is not allowed?
3. Marta is writing a science-fiction story in which the serial number of a starship can have one, two, or three different letters, followed always by four different numerals. How many different starship serial numbers are possible?
Anyways, I'm a student that's been out of school for 6 years but am now taking a math upgrade class to apply for a post-secondary course. I live in Saskatchewan, Canada and our curriculum has been modified so there is only 1 math level required for post-secondary application. What I'm taking is called Foundations of Mathematics 30 Level. It includes pre-calculus.
The unit I'm working on right now deals with Permutations and Factorial Notation. I'm struggling with the concept of simplifying notations within algebraic equations. Below I've posted the current assignment I'm working on. Any help or insight will be greatly appreciated!
. . . . .Section 4.2 and 4.3 Handin Assignment
1. Solve \(\displaystyle \, \dfrac{(n\, +\, 3)\, (n\, +\, 2)!}{(n\, +\, 1)!}\, =\, 30\)
My work:
. . . . .\(\displaystyle \color{blue}{\dfrac{(n\, +\, 3)\, \bigg[(n\, +\, 2)\, (n\, +\, 1)\bigg]}{(n\, +\, 1)}\, =\, 30} \)
. . . . .\(\displaystyle \color{blue}{(n\, +\, 3)\, (n\, +\, 2)\, =\, 30}\)
. . . . .\(\displaystyle \color{blue}{n^2\, +\, 5\, =\, 30}\)
2. How many different permutations are there of 5 objects from a set of 7 different objects, if repetition is not allowed?
3. Marta is writing a science-fiction story in which the serial number of a starship can have one, two, or three different letters, followed always by four different numerals. How many different starship serial numbers are possible?
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