Answer:
1/2 = 0.5 = 50%
Step-by-step explanation:
assuming the two choices are either a boy or a girl,
you have the possibilities of
Girl, Girl
Girl, Boy
Boy, Girl
Boy, Boy
the bolded options are the options where there is one girl
assuming there's an equal chance to be born a girl or boy the probability is
outcomes with one girl / total outcomes
= 2/4
= 1/2
= 0.5
= 50%