Question

${13}^{2} and {14}^{2} \\ how \: any \: non \: perfect \: square \: \\ are \: there\: \: \: \:$
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Answer 1

${13}^{2} = 169 \\ {14}^{2} = 196$

⚠️ Read carefully & understand it

Perfect square numbers end with 0, 1, 4, 5, 6 or 9 but all the numbers with end with 0, 1, 4, 5, 6 or 9 are not perfect square numbers.

Example, 11, 21, 51, 79, 76 etc. are the numbers which are not perfect square numbers.