Permutation: In a race of 10 students, find the number of ways students can finish 1st, 2nd, and 3rd. In this case the order matters, so it is a permutation.
10 x 9 x 8 = 720 ways
Combination: In a class of 10 students, find the number of ways a group of 3 students can be selected to win a prize. In this case the order doesn't matter, so it's a combination.
10 x 9 x 8 / (3 x 2 x 1) = 120 ways
Answer:
C) 9
Step-by-step explanation:
12 - 9 = 3
Answer: Look for key words.
Step-by-step explanation:
Example: 15 added and 24.
Added is the key word
24 + 15
Answer:
46.8
Step-by-step explanation:
The equation is: 0.39 times 120=x
0.39 x 120= 46.8
29% of 120 is 46.8
