Which is a perfect square between $50$ and $80$?

Which is a perfect square between $50$ and $80$?
  1. $64$
  2. $60$
  3. $70$
  4. $72$

Solution

$8^{2} = 64$ lies between $50$ and $80$. Other squares around: $7^{2}=49$, $9^{2}=81$.

Asked in: NSO

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