The smallest perfect square greater than 122 is and the largest perfect square smaller than 122 is .

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Solution

We know. $11^{2} = 121$

$∴$ The largest perfect square smaller than $122$ is $121.$

The smallest perfect square larger than $122$ is $(11 + 1)^{2} = 12^{2} = 144$

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The ratio obtained when the largest 4-digit perfect square number divided by the smallest 4-digit perfect square number will be

Column I	Column II
Greatest 3 digit perfect square	$1, 024$
Smallest 5 digit perfect square	$9, 801$
Smallest 3 digit perfect square	$961$
Greatest 4 digit perfect square	$10, 000$
Smallest 4 digit perfect square	$100$

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