_________ says that the marginal product of a factor input initially rises with its employment level. But after reaching a certain level of employment, it starts falling.
In a market system, the central problems regarding how much and what to produce are solved through the coordination of economic activities brought about by ________ signals.
In the question, a word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as in two matrices given below. The columns and rows of Matrix I are numbered from 0 to 4 and that of Matrix II are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column, e.g., 'K' can be represented by 20, 34, etc. and 'Z' can be represented by 67, 88 etc. You have to identify the set for the word 'PURE'.
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