Question

Find the smallest six- digit number which is a perfect squares ?
100011
999999
100000
100489

Plz with explaination

Answer 1

100000 is the least number of six digit so,

100000 is 489(4389 â^' 3900) is less than 317². Hence to be perfect square,489 should be added to 100000

100000+489=100489

Hence, the least six-digit that is a perfect square is 100489