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If `[]` denotes the greatest integer less than or equal to the real number under consideration, and `-1lt=x<0,0lt=y<1,1lt=z<2,` then the value of the determinant `|[[x]+1, [y],[z]], [[x], [y]+1, [z]], [[x], [y], [z]+1]|` is a. `[x]` b. `[y]` c. `[z]` d. none of these

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