There are 9 balls of equal size and same weight(they look
similar) except 1. How many weights required to find the
dissimilar ball using a weighing balance?
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Answer Posted / sumit bakshi(b.c.roy engg. col
ans:1
At first we divided the 9 balls in two gr. let gr.1 & gr.2 .then simillarly divide gr.1 balls into gr.3 & gr.4.Again gr. 2 balls are divide into gr.5 & gr.6 .Then we get atleast one disimilar ball!
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