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Official Soldier GD Paper: [Bihar Regt Centre, Danapur Cantt] - 28 March 2021

- Always an integer
- Always a rational number
- sometimes rational and sometimes irrational number
- Always an irrational number

Option 4 : Always an irrational number

**Concept used:**

Any number which can be represented in the form of p/q is rational number.

An **irrational number** is a real number that cannot be expressed as a ratio of integers, for example √2

**Calculation:**

Product of rational and irrational number is always irrational if rational no is non zero

Example :

Rational no = 4

irrational no = √2

Rational × irrational = 4√2

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