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$A = [\begin{matrix} 2 & 4 & 6 \\ 4 & 6 & 8 \end{matrix}]$ এবং $B = [\begin{matrix} 6 \\ 7 \\ 8 \end{matrix}]$ হলে AB-এর ক্রম কত?

2 \times 1

1 \times 2

3 \times 1

1 \times 3

ANS : 1

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