Question

trick to find square root of a perfect sequre number

Answer 1

Remember the following:

If the numbers end units digits

1.1 or 9(10-1)

4.2 or 8(10-2)

9.3 or 7(10-3)

6.4 or 6(10-4)

Now logic is

1^2=1

2^2=4

3^2=9

4^2=16. Now here 0,1,4,9,6,5,6,9,4,1,0 is aboves are all in sequence

5^2=25

6^2=36

7^2=49

8^2=64

9^2=81

10^2=100

So,. Lastly I say that

We noticed

Units place digits of both

1^2 & 9^2= 1

2^2 & 8^2= 4

3^2 & 7^2= 9

4^2 & 6^2= 6

Hope u got it