Question

find least 4 digit number which is a perfect square ​

Answer 1

Answer:

The smallest four digit number which is a perfect square is 1024....

See (10)² =100 ie. 3 digit number....

(20)²=400 ie. again 3 digit number.

(30)²= 900 again 3 digit number

(31)²=961 It is also a three didit number.....

so before 31 all numbers are of 3 or 2 digit.....

either they are a perfect square .......

but (32)²= 1024.......

It is the least 4-digit number which is a perfect square.....

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