(i) A has at least one girl and twice as many boys as girls.
(ii) B has at least one girl and three times as many boys as girls.
(iii) C has at least one girl and three more boys than girls.
(iv) When I tell you the number of children we have a number less than 25 you will know how many children I have, but not how many children each of the others has. Altogether we have ..
Who is the speaker and how many children does the speaker have?