Created trio

What is the probability that in the created trio, which consists of 19 boys and 12 girls, they will be:
a) the boys themselves
b) the girls themselves
c) 2 boys and one girl?

Correct answer:

p1 =  21.5573 %
p2 =  4.8943 %
p3 =  45.6507 %

Step-by-step explanation:

c=19 d=12 s=c+d=19+12=31  p1=100 s (s1) (s2)c (c1) (c2)=100 31 (311) (312)19 (191) (192)=21.5573%
p2=100 s (s1) (s2)d (d1) (d2)=100 31 (311) (312)12 (121) (122)=8994400%=4.8943%
C2(19)=(219)=2!(192)!19!=211918=171 C1(12)=(112)=1!(121)!12!=112=12 C3(31)=(331)=3!(313)!31!=321313029=4495 p3=100 s (s1) (s2)3 c (c1) d=100 31 (311) (312)3 19 (191) 1245.6507%   Verifying Solution:   p33=100 (3s)(2c) (1d)=100 4495171 1245.6507 %



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







Tips for related online calculators
Our percentage calculator will help you quickly calculate various typical tasks with percentages.
Would you like to compute the count of combinations?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions: