Answer:
A. 1, 287 ways
B. 154,440 ways
Step-by-step explanation:
A. We want to choose 5 objects from a total 13, without considering the order in which they are chosen.
The correct way to do this is by using the combination formula since order is not considered;
Thus we have ; 13 C 5 read as 13 combination 5;
Mathematically, n C r is ; n!/(n-r)!r!
Thus, we have ;
13!/(13-8)!8! = 13!/5!8! = 1,287 ways
B. By considering order, we shall be using the permutation formula;
Mathematically n P r = n!/(n-r)!
Read as n permutation r;
Using the numbers involved, we have ; 13 P 5
= 13!/(13-5)! = 13!/8! = 154,440 ways
Answer:
6 pencils per student
Explanation:
We know that there are 150 pencils and 25 students; therefore to find the number of pencils each student gets, we divide 150 by 25
Hence,
150 pencils / 25 students = 6 pencils / student.
which is our answer!
Answer:
a. A is disjoint to B
b. A is subset of B
c. A -B
d. A union B complement
e. A intersection B complement
f. B-A complement
Answer:
786
Step-by-step explanation:
6•1=6
6•30=180
6•100=600
600+180+6=786
Answer:
6
Step-by-step explanation:
Aops Question
