NetApp Interview Question
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Interview Question for Software Engineering Manager at NetApp:
Mar 19, 2009
A IQ question: I have 9 coins and 8 have the same weight and the last one is heavier. I also have a balance beam to weigh the coins with. I can only use the balance beam 2 times to find the heavier coin. How do you find the heavier coin?
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1 of 1 people found this helpful
Oct 6, 2010
OMG... It says the last coin was heavier! FIND THE LAST COIN...duh!
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Oct 31, 2010
@ranee : The answer given is correct. If the heavier coin is in the 3rd pile , then take any two from them and weigh them . If they are equal , you can easily say the last coin is the heaviest , otherwise the heaviest coin is one of the two being weighed.
If in the first go , you can get hold of the heavier pile , do the same procedure as above. You can easily find it by using the balance twice.
If in the first go , you can get hold of the heavier pile , do the same procedure as above. You can easily find it by using the balance twice.
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