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4. Single-Line Indirect Truth Tables for Validity - Practice 3 In many cases, indirect truth tables provide a quick method of testing the validity of an argument. Indirect truth tables begin with the assumption that the premises are true and the conclusion is false (in other words, that the argument is invalid). If it's possible to find a set of truth values for all of the statement letters in the argument, resulting in true premises and a false conclusion while avoiding any contradictions, then the argument is indeed invalid. But if that assumption inevitably leads to a contradiction, then the argument is valid. Solve the indirect truth table for this argument: Given Argument Premise 1: Bv (UVM) Premise 2: Uv (MVR) Conclusion: Bv (UVR) On paper, construct an indirect truth table for the given argument. Then explain your results by filling in the following statements. Assumptions: The premises were assumed to be and the conclusion to be Results: Since this a contradiction, the argument is