There are seven children in Mawkuo's family. Of these children there are at least four girls. How many of the possible groups of boys and girls have at least four children?
There are seven children in Mawkuo's family. Of these children there are at least four girls. How many of the possible groups of boys and girls have at least four children?
If the sum of a number and its reciprocal is 5/2
, then the numbers are