Question

There are 10 boys and 10 girls. What is the probability that 2 boys will be chosen

Answer 1

Approximately 24%.

Explanation:

There are
`_(10)C_2=45` ways of choosing two boys and
`_(20)C_2=190` ways of choosing two kids (boys or girls). So the probability of getting two boys is
`45/190=0.23684210526`.

Answer 2

about 24%

Explanation:

1/2 times 9/19

0.5 times 9/19

is about 0.24

0.25 mean about 24%