Question

Find the least number which must be added to 531400 to make it a perfect square. Find this
perfect square and its square root.
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Answer 1

Answer:

Find the least number which must be added to 531400 to make it a perfect square. Find this

perfect square and its square root.

Answer 2

The square of 1 is 1

similarly for 2² is 4

3 ²= 9

4²=16

5²=25

6²=36

7²=49

8²=64

9²=81

Step-2

Take all the once place digit number from these number i.e,

1,4,5,6&9

First we take the least one from these number i.e, 1

Add 1 to the given number 531400

it becomes 531401

this is not a perfect square

Take the next least number i.e, 4

Add 4 to the given number 531400

it becomes 531404

this is also not a perfect square of any number

Take next number i.e. 5

Add 5 to the number 531400

it becomes 531405

check its square root

it is also not a perfect square of any number

take 6 and add to the given number

number becomes 531406

similarly for 9

but these all not are perfect square

Then take all the number between 10-90 whose once place is is 1,4,5,6&9

for example 21,24,25,26,29...etc

finally you reach to 41

add 41 you get 531441

the √531441=729