Ques: You have 5 Box, 4 Box have 9 gram ball and 1 Box have 10 gram balls. You have a digital weight
Machine (One pan machine, with digital reading). How will you find 10gram ball Box in one measurement?
Ans: Just take 1 ball from first Box, 2 ball from second, 3 ball from 3rd, 4 balls from 4th Box, 5
balls from 5th Box.
Now measure all the ball, now you can total 15 balls. if total weight comes to
5*10 + 9*10 then 10 gram ball in 5th Box
4*10 + 9*11 then 10 gram ball in 4th Box
3*10 + 9*12 then 10 gram ball in 3rd Box
2*10 + 9*13 then 10 gram ball in 2nd Box
1*10 + 9*14 then 10 gram ball in 1st Box
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