there are 27 coins in which 0ne is heavier than rest(all equal weight).how many measurements are needed to isolate that odd one.
Three Measurements. Take three Divisions each 9 9 9 Odd one goes out in First Measurement Again take three divisions 3 3 3 Odd one goes out in Second Measurement Again take three divisions 1 1 1 Odd one comes into ur hand in Third Measurement