in 80 coins one coin is counterfiet what is minimum number of weighings to find out counterfiet coin
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will be 5.
make groups like
40,40
then 20,20
then 10 ,10
then 5,5
then in case to tell minimum no of cases...divide them in 2,2
they will weigh equal
the one left with us will be required coin.
make groups like
40,40
then 20,20
then 10 ,10
then 5,5
then in case to tell minimum no of cases...divide them in 2,2
they will weigh equal
the one left with us will be required coin.
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