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If A + B means that A is the father of B, A – B means that A is the mother of B, A × B means that A is the brother of B then which of the following expression shows that Q is the son of P?
5Q:
If A + B means that A is the father of B, A – B means that A is the mother of B, A × B means that A is the brother of B then which of the following expression shows that Q is the son of P?
- 1P × P – Qfalse
- 2P + Q – Rfalse
- 3P – Q × Rfalse
- 4P – Q + Rtrue
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Answer : 4. "P – Q + R"
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