there are 7 children and the small one is boy find the probability of 6 boys

• answer is 1/64.
  bcoz probability to the birth of boy or girl is = 1/2
  7th one birth is boy.7th probability is 1.
  so the probability to to the birth of 6 boys
  = (1/2)*(1/2)*(1/2)*(1/2)*(1/2)*(1/2)*1
  = (1/2)^6
  = (1/64) is the answer
• 12 years agoHelpfull: Yes(4) No(0)
• so we we to calculate probability of 5 boys in the first 6 boys.
  total number of choices are= 2*2*2*2*2*2=64
  favorable=bbbbbb,gbbbbb,bgbbbb,bbgbbb,bbbgbb,bbbbgb,bbbbbg=7
  so probability is =7/64
• 12 years agoHelpfull: Yes(2) No(9)
• sorry to say Kalirathinam
  But we talk about 6 boys
  not 7 boys
  that case of 7 boys.
  
• 12 years agoHelpfull: Yes(1) No(1)
• ans is 5/64
• 12 years agoHelpfull: Yes(0) No(0)