Question

Find the greatest 4 digit number which is a perfect square.
With proper Explanation. ​

Answer 1

Answer:

Given that,  

The greatest 4 digit number which is perfect square.

We know that.  

The smallest  4 digit number is 1000.

The greatest 4 digit number is 9999.

We know that,

The square of 100 is 10000 or 1 more noteworthy than the biggest 4 digit number.

So, the closest square root of the largest perfect square is 99. So. The square of 99 is

 (99)² = 9801.

We can say that, the largest closest square of four digits is 99.

Hence, The greatest 4 digit number is 9999 and it is the closest square of 99.