Largest perfect square less than $1000$ is

Largest perfect square less than $1000$ is
  1. $961$
  2. $1024$
  3. $900$
  4. $999$

Solution

$31^{2} = 961 < 1000$, $32^{2} = 1024 > 1000$. So $961$ is the largest.

Asked in: IMO

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