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| Q.20 | 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? | |
| Ans | 1. P – Q + R | |
| 2. P + Q – R | ||
| 3. P – Q × R | ||
| 4. P × P – Q |
Correct Ans Provided: 1
