there are five balls in a bag Two ball are drawn and are found to be white.If the probablity that all the balls in the bag are white is a/b then find a*b

• 5p2/2! +5p3/3!+5p4/4!+5p5/5!=10+10+5+1=26
  Total probability is 5p5..drawing 5 off 5..120
  Probability=26/120..26*120=3120
• 10 years agoHelpfull: Yes(0) No(1)
• ans is 1.
  a*b=1.
• 10 years agoHelpfull: Yes(0) No(0)