Maths Question........
I live in a village and I am a shopkeeper. I sell different things and all of them are sold in kg's ( i.e 1 kg, 12 kg etc.). I only sell my goods in complete kg's i.e only in whole numbers( 2.5 kg is out of scope). The problem is that I donot have
an electronic weighing machine and only have a traditional weighing machine. A friend of mine has told that I need only "4 different weights" to sell my goods if they are to be sold in the range of 1 to 40 kg. This is perfectly acceptable to me. Can you guess those 4 weights that I need to have so that I can weight anything between 1-40 kg? I am not allowed to use the weighing machine twice to weight a single request. i.e If someone wants to have 37 kg. of rice I will use those four wieghts (or less) to weigh 37 kg. of rice for him and not use the the weigh machine twise.
Weight -------> Some metallic material with fixed weight (Can be any)
Traditional weigh machine --------> Any machine with two panels (usually one for weights and one for what is to be
weighed)
an electronic weighing machine and only have a traditional weighing machine. A friend of mine has told that I need only "4 different weights" to sell my goods if they are to be sold in the range of 1 to 40 kg. This is perfectly acceptable to me. Can you guess those 4 weights that I need to have so that I can weight anything between 1-40 kg? I am not allowed to use the weighing machine twice to weight a single request. i.e If someone wants to have 37 kg. of rice I will use those four wieghts (or less) to weigh 37 kg. of rice for him and not use the the weigh machine twise.
Weight -------> Some metallic material with fixed weight (Can be any)
Traditional weigh machine --------> Any machine with two panels (usually one for weights and one for what is to be
weighed)
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ASKER
or do you know some magic?
I have solved this problem before ... just that the story was different ... So I knew the answer beforehand
ASKER
OK
so I will now come up with some one much more tugher then this one............
and check your knowledge...............
so I will now come up with some one much more tugher then this one............
and check your knowledge...............
Hello Sunnycoder,
But, how do you weigh an item which weighs 11kg, The weights used will not do the needful?
But, how do you weigh an item which weighs 11kg, The weights used will not do the needful?
ASKER
Easy put 3 + 9=12 kg on one side and 1 kg on the other side....
but, the other side should supposed to have only goods and not weights,isn't it?
ASKER
1 min. to read and solve and post.......
Can you give me some logic for sloving so quickly?
Is this already posted somewhere on the net?
and yes your answer is correct..........