21. Each family in a locality has at most two adults, and no family has fewer than 3 children. Considering all the families together, there are more adults than boys, more boys than girls, and more girls than families. Then the minimum possible number of families in the locality is

• Ans: 3 family
  let number of family = X then
  number of adults = 2X and
  minimum number of kids = 3x.
  Now put X=1 we see number of girls equal to number of family so x can not = 1
  Now put X= 2 we see number of boys equal to number of girls so X can not =2
  Now put X= 3 fulfill all condition so X= 3 is the answer.
• 11 years agoHelpfull: Yes(52) No(4)