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