A professor has 7 books they are trying to arrange on a shelf. If the professor selects 3 books at a time, how many different ar
rangements of books can they come up with?
i got 210 but im not sure
1 answer:
<em>The number of </em><em>different arrangements </em><em>of books is 210</em>
What is the formula for Permutation?
Permutation in mathematics can be calculated by using the formula
nPr = 
where
- nPr = Permutation required
- n = total number of objects = 7
- r = number of objects selected = 3
nPr = 
nPr = 
nPr = 210
Therefore, the required number of ways is 210
learn more about permutations here brainly.com/question/112112
You might be interested in
The answer is -1/3
The slope m is:
m = (y2 - y1) / (x2 - x1)
(x1, y1) = (-2, 2)
(x2, y2) = (4, 0)
m = (0 - 2) / (4 - (-2)) = -2 / 6 = -1/3
Answer:

900,000 would be the nearest hundred thousand
sorry if it's wrong, but I did try
16:29:15 I think that would be it but, I'm really sorry if that's not right
Answer:
Given:
y
varies inversely with
x
.
So, we can write it as:
y
∝
1
x