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You have got 9 lemons, which all look precisely identical. Similar peak, identical coloration… There isn’t a seen distinction between any of them.
All lemons weigh the identical quantity, aside from one, which weighs rather less than the others.
You might be allowed to make use of a scale to match weight, however you possibly can solely use the dimensions at most 2 occasions.
Can you discover the lemon that weighs lower than the others?
It could possibly be
Take teams of three lemons every (say A, B and C) and weigh which ought to present you the required lemon
First weight two teams of three lemons every – say A and B. In the event that they grow to be identical weight – which signifies that the required lemon will not be in both of those teams. Then weight two lemons of group C – which may end up in lemons of identical weight being weighed – means the unnoticed one is the required one in any other case it exhibits up within the stability.
each the teams A and B don’t weigh the identical, establish the lesser weighing group (say B) and weigh two lemons of B and repeat the above course of to search out out the much less weighing lemon.
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