Question

At the site of Mohenjodaro in the Indus Valley, a series of carefully worked cubes of colored stone are recognized as a system of weights. This discovery allows us to infer that
a) they had developed a concept equivalent to our own about weight
b) there was a system of numeration involving hierarchical numerical categories
c) the weight system was probably used for practical purposes
d) all of the above
e) a and c only

Answer

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