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মান নির্ণয় কর

[\begin{matrix} 1 & 1 & 1 \\ 1 & a & a b \\ 1 & a b & a b^{2} \end{matrix}]

a (1 - b)^{2}

b (1 - b)^{2}

- a (b - 1)^{2}

- b (a - 1)^{2}

None

ANS : 3

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