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

Correct option is B

Solution:
We are given the number 6659.
We need to find the smallest number that should be added to 6659 so that it becomes a perfect square.

Step 1: Find the square root of 6659
√6659 ≈ 81.6

81² = 6561

82² = 6724

So, 6659 is between 81² and 82²

Step 2: Next perfect square = 82² = 6724
Now subtract:

6724 - 6659 = 65
Final Answer: (B) 65
So, 65 should be added to 6659 to make it a perfect square.