A class consists of 100 students, 25 of them are girls and 75 boys; 20 of them are rich and remaining poor; 40 of them are fair complexioned. The probability of selecting a fair complexioned rich girl is

• ans:1/50
  the probability of selecting girl is:25/100=1/4
  the probability of selecting rich is:20/100=1/5
  the probability of selecting fair complexioned is:40/100=2/5
  three are independent;probability of rich and fair complexioned girl is:
  (1/4)*(1/5)*(2/5)=1/50
• 13 years agoHelpfull: Yes(41) No(0)
• (1/4)*(1/5)*(2/5)
  =1/50 ANS
• 13 years agoHelpfull: Yes(11) No(1)
• probability of selecting a rich fair complexioned gal is
  25/100 * 20/100 * 40/100 = 1/50 = 0.02
• 13 years agoHelpfull: Yes(9) No(0)
• this question cant be answered because proper relation has not been established in question
• 13 years agoHelpfull: Yes(1) No(14)
• 
  
  Since none of these probabilities are connected to each other, it means doen't mention , out of the 25 girls, 20 are rich...the probabilities are all independent. Hence they need to be multiplied. So...
  
  Probability of being a girl is 0.25.
  Probability of being rich is 0.2 and
  probability of being fair is 0.4 ..
  
  so the total probability of a Fair complexioned rich girl is 0.25 x 0.4 x .2 = 0,92 or 2 %.
• 10 years agoHelpfull: Yes(0) No(0)
• 1/50
  1/4*1/5*2/5=1/50
• 9 years agoHelpfull: Yes(0) No(0)
• 8x-35-45+(total age of women)=(x+2)*8
  
  =>total age of 2 women is =96...
  
  hence, avg=48
  
• 8 years agoHelpfull: Yes(0) No(1)