My neighbor has seven children. Every brother has equal no. of brothers and sisters, but each sister has twice as many brothers as sisters. How many brother & sister?

• 4 brothers and 3 sisters
  
  each boy has 3 brothers and 3 sisters(equal)
  each girl has 4 brothers and 2 sisters (twice)
• 14 years agoHelpfull: Yes(30) No(2)
• let number of boys be B and sisters be S so from question B-1=S
  B=2(S-1)
  on solving we get S=3 B=4
• 10 years agoHelpfull: Yes(6) No(0)
• 4 BROTHERS AND 3 SISTERS
• 14 years agoHelpfull: Yes(4) No(0)
• 4 brother and 3 sister
• 10 years agoHelpfull: Yes(2) No(0)
• 4 brothers and 3 sisters
  Since the boys have as many brothers as sisters,there must be 1 boy more than the number of girls and by this we also get to know that this solution fulfill the requirement that each girl has twice as many brothers as sisters(here 1 girl will have 2 sisters and twice of that i.e 4 brothers)
• 9 years agoHelpfull: Yes(2) No(0)
• 4 brothers and 3 sisters
• 9 years agoHelpfull: Yes(2) No(0)
• Let the number of boys be B and the number of girls be G
  B+G=7
  each boy has B-1 brothers and G sisters
  => B-1=G
  =>B=G+1
  G+G+1=7
  2G=6
  G=3
  B=G+1=4
  Hence 4 boys and three girls
  
• 8 years agoHelpfull: Yes(1) No(0)
• 4 brothers and 3 sisters
• 14 years agoHelpfull: Yes(0) No(0)
• 4 Brothers and 3 Sisters
  Beacause every brother has equal no of brothers and sisters
  
• 11 years agoHelpfull: Yes(0) No(0)
• 4 BROTHERS AND 3 SISTERS
• 9 years agoHelpfull: Yes(0) No(0)
• 4 brothers and 3 sisters
  
• 9 years agoHelpfull: Yes(0) No(0)
• 4&3
  bro & sis
• 9 years agoHelpfull: Yes(0) No(0)
• 4 brothers and 3 sister
  
• 9 years agoHelpfull: Yes(0) No(0)
• 4 brothers and 3 sisters
  
• 9 years agoHelpfull: Yes(0) No(0)
• 4 boys nd 3 girls
• 9 years agoHelpfull: Yes(0) No(0)
• brothers= 4 and sisters=3
  for 1st condition:
  for 1 brothers -> 3 bro's & 3 sis's
  for 2nd condition:
  for 1 sister ->4 bro's & 2 sis's
• 8 years agoHelpfull: Yes(0) No(0)
• 4 brothers and 3 sisters.(i.e) but two brother for each sister (in that they shares one brother with other sister)
• 8 years agoHelpfull: Yes(0) No(0)
• 3 sisters and 4 brothers
• 8 years agoHelpfull: Yes(0) No(0)
• 4 brothers n 3 sisters
  1 brother has 3 brothers n 3 sisters while a sister has 4 brothers n 2 sisters
• 8 years agoHelpfull: Yes(0) No(0)
• Brother=Brother+Sister,sister=2Brothers+sister to get 7 children there will be 4Brothers and 3sisters.
• 7 years agoHelpfull: Yes(0) No(0)