if a shopkeeper has weights 1, 3,9,27 how many different weights can he weigh
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he can weigh the following weights
1,3,9,27, - when taken individually
4,10,28,12,30,36- when taken 2 weights together
13,31,37,39, - when taken 3 together
40 when all 4 are taken
so total 15 different weights can be weighed
1,3,9,27, - when taken individually
4,10,28,12,30,36- when taken 2 weights together
13,31,37,39, - when taken 3 together
40 when all 4 are taken
so total 15 different weights can be weighed
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