**Answer :**

**Let p be false.**

**It means the sum of an irrational and a rational number is rational.**

**Let r be a rational number.**

**Let √m is irrational, and n is rational number.**

⇒ **√m + n = r**

⇒ **√m = r – n**

**Now √m is irrational; whereas (r – n) is rational.**

**This is contradiction.**

**Hence our assumption was wrong.**

**∴** **p is true.**

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