Question { iFlex, 38959 }

There are 8 stones which are similar except one which is
heavier than the others. To find it, you are given a pan
balance. What is the minimal number of weighing needed to
find out the heaviest stone ?

Answer

divide the stones 3,3,2. put 3 stones in both sides of the
pan balance. if the stones have equal weight.if there is no
deviation in pan balance.Then put remaining 2 stones in the
pan balance.Then we take the weightiest ball in the 8 stones
with 2 times weighted.