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Q.

The greatest 6-digit number, which is a perfect square is


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a

 Question Image

b

 Question Image

c

 Question Image

d

 Question Image

answer is A.

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Detailed Solution

Concept-  To find the perfect square, check each of the given number. First start with the greatest number from all and apply a long division method.
Given numbers are, Question Image, Question Image, Question Image, Question ImageLet’s start with the greatest number Question Image,
Using long division method,
First, group the numbers in pairs. There are three pairs Question Image means it will be solved in three parts. Take the largest number as a divisor basically whose square is smaller or equal to the first pair. Now, add the quotient and divisor for the new divisor. Take the second pair down with the remainder of the first pair. In the new divisor at the right side again take the larger number whose square is smaller or equal to the new dividend and repeat the same until you’ll get the remainder zero.
Question ImageHere, Question Image is the perfect square of Question Image.
Hence, the correct answer is option (1) .
 
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