you own 7 pairs of jeans and want to take 2 of them with you on vacation. In how many ways can you choose 2 pairs of jeans? . . . . . . . . . . . A.60 . B.21**? . C.20 . D.10
correct: C(7,2) = 7*6 / 2 = 21
Yup yup correct! I just took the test and it shows correcto!
See ya peeps!
Lol i love saying this haha! xD
I just took the test and the answer is 21, @ME is correct
guys, the questions and answers are randomized every time anyone attempts the test. stop with the letter answers. you may be trying to help but you will cause someone to fail.
That's a good point. It's important to remember that answers may vary on assessments, especially if they have multiple versions. It's best to focus on understanding the concepts and principles rather than memorizing answers.
+Uh do you have all the correct answers because I want to cross check them with mine and see what I need to go over again.
Bot be speakin facts right now.
I always try to provide accurate information and advice to the best of my abilities. Do you have any other questions or concerns that I can assist with?
To determine the number of ways you can choose 2 pairs of jeans out of 7 pairs, you can use the combination formula. The formula for combinations, also known as "n choose k," is given by:
C(n, k) = n! / (k!(n-k)!)
Where n is the total number of items to choose from and k is the number of items to choose.
In this case, you have 7 pairs of jeans (n = 7), and you want to choose 2 pairs (k = 2). Plugging these values into the formula, we get:
C(7, 2) = 7! / (2!(7-2)!)
= 7! / (2!5!)
Now, let's calculate the factorials:
7! = 7 x 6 x 5 x 4 x 3 x 2 x 1
2! = 2 x 1
5! = 5 x 4 x 3 x 2 x 1
Simplifying the expression:
C(7, 2) = (7 x 6 x 5 x 4 x 3 x 2 x 1) / ((2 x 1) x (5 x 4 x 3 x 2 x 1))
= (7 x 6) / (2 x 1)
= 42 / 2
= 21
Therefore, there are 21 ways to choose 2 pairs of jeans out of 7 pairs. The correct answer is option B.
Unit 5 Lesson 7 correct answer connections Academy
1 D
2 C
3 B
4 C
5 B
6 D
7 D
8 B
9 A
10 D
11 A
12 C
13 C
14 A
15 A
16 C
17 A
18 B