Let we have 8 coins named (for simplicity) x1, x2, x3, y1, y2, y3, a, b According to your question "3 of them weigh x units" : x1+x2+x3 =x
"3 of them weigh y units": y1+y2+y3 =y now consider the case when i grouped (x1, x2 x3) in single group (y1,y2 ,y3) in one group and (a,b) in one group. Now we will measure weight of 1st group (x1, x2, x3) :It will give x then we conclude that all elements in this group are those element whose total weight is x :Type 1 element. similarly for y. and for the last group we will pick up any element and measure its weight ..its weight will be either a or b. Depending upon outcome we will categorize them a and b. So 3 weighing is required. On Tue, Jul 10, 2012 at 7:05 PM, payal gupta <[email protected]> wrote: > @navin...Sorry didnt get you how come u were able to segregate all the > coins by the proposed method?? > > > On 7/10/12, Navin Kumar <[email protected]> wrote: > > Minimum no. weighings: > > > > Divide 8 coins in group of 3, 3 and 2. > > > > For minimum weighsing group1 's total weight is x units(say) -->FIrst > > weighing > > Groups 2nd total weights is y units --------> Second weighing. > > Lastly one more weighing among a unit and b unit coins.--->3 rd weighing > > > > > > So minimum 3 weighing is required. > > > > > > > > On Tue, Jul 10, 2012 at 11:03 AM, payal gupta <[email protected]> > wrote: > > > >> You have 8 coins. 3 of them weigh x units, 3 y units, 1 a units and 1 b > >> units. They are all mixed and look identical. What are the minimum no of > >> weighings reqd to seperate the for types of coins??? > >> > >> -- > >> You received this message because you are subscribed to the Google > Groups > >> "Algorithm Geeks" group. > >> To view this discussion on the web visit > >> https://groups.google.com/d/msg/algogeeks/-/HhIaN4zgpxMJ. > >> To post to this group, send email to [email protected]. > >> To unsubscribe from this group, send email to > >> [email protected]. > >> For more options, visit this group at > >> http://groups.google.com/group/algogeeks?hl=en. > >> > > > > -- > > You received this message because you are subscribed to the Google Groups > > "Algorithm Geeks" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]. > > For more options, visit this group at > > http://groups.google.com/group/algogeeks?hl=en. > > > > > > -- > You received this message because you are subscribed to the Google Groups > "Algorithm Geeks" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/algogeeks?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
