This question was previously asked in

HSSC Police Constable 7 Aug 2021 Shift 1 (canceled) Official Paper

- 6
- 5
- 3
- 2

Option 4 : 2

**Calculation:**

Let smallest positive integer be n.

From options:

I: 6 × 392 = √2352 = 48.49

II: 5 × 392 = √1960 = 44.27

III: 3 × 392 = √1176 = 34.29

IV: 2 × 392 = √784 = 28

**∴ 2 is the smallest positive integer when multiplied by 392, product is a perfect square.**

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