Q. There are 9 balls of these one is defective. Find the minimum no. of chances of finding the defective one.2

• 2 chances.
  Split 9 balls in to 3,3,2.
  1)1st weigh both 3 balls. if it is equal then it is present in the rest of the two balls. we can easily detect from that two.
  2)If it is present in any of the 3 balls,
  then split that again in to 1,1,1;
  now weigh any two balls.... if it is equal, the rest is defective.
• 11 years agoHelpfull: Yes(2) No(5)
• Right answer btao yr
• 10 years agoHelpfull: Yes(0) No(0)
• right answer 3 hai.......... divide it into 5& 4 & then do the same
• 10 years agoHelpfull: Yes(0) No(1)
• 1/9
  using probability taking one of 9 balls is 1/9
• 4 years agoHelpfull: Yes(0) No(0)