Pairs

Teachers must choose one pair of boys and girls from the five girls and four boys.

A) How many such pairs of (M + F)?
B) How many pairs were only boys (M + M)?
C) How many are all possible pairs?

Correct answer:

a =  20
b =  6
c =  36

Step-by-step explanation:

a=4 5=20
b=4 3/2=6
C2(9)=(29)=2!(92)!9!=2198=36 c=(25+4)=36



Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Would you like to compute the count of combinations?

Related math problems and questions: