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Which of the following smallest number should be added to 6659 to make it a perfect square?

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CSIR-CLRI JSA 2024 Official Paper-I (Held On: 16 Feb, 2025)
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  1. 230
  2. 65
  3. 98
  4. 56

Answer (Detailed Solution Below)

Option 2 : 65
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Detailed Solution

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Given:

Number = 6659

Formula used:

To find the smallest number to be added to make it a perfect square.

Calculations:

Nearest perfect square less than 6659 is 812 = 6561

⇒ Difference = 6659 - 6561 = 98

Nearest perfect square greater than 6659 is 822 = 6724

⇒ Difference = 6724 - 6659 = 65

∴ The correct answer is option 2.

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