Question

Find the least number of four digits w
hich is a perfect square.​

Answer 1

Answer:

Step-by-step explanation:

Answer:

1024 is the least four-digit perfect square.

To find:

Least four-digit perfect square

Solution:

We have to find out the four digit least perfect square. Hence, let us start by trial and error method as under:

i.e. Three-digit number

i.e. Three-digit number

i.e. Three-digit number

Now, 900 is three-digit number close to 4 digit numbers i.e. 1000 onwards. Hence,

Hence, 1024 is the least four-digit perfect square.

Answer 2

Answer:

1024

Step-by-step explanation:

30 squared is 900

31 squared is 961

32 squared is 1024 so it has to be the smallest 4 digit square number