Question

Do without trial and error and incomplete answers will be reported and blocked .

Answer 1

Step-by-step explanation:

Answer is option (a)

because

${n}^{2} = 12a \times b \\ according \: to \: a \: theoram \: of \: arithematic \: in \: real \: numbers \\ when \: a \: number \: divides \: a \: square \: number \: then \: it \: will \: also \: divide \: the \: square \: root \: of \: this \: number \\ so \: {n}^{2} \: is \: divided \: by \: \: 12 \: so \: n \: will \: aslo \: be \: div \: by \: 1$

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