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\bar{A}, \bar{B} ও \overset{⇀}{C}

\bar{A} \times (\bar{B} \times \overset{⇀}{C)}

\bar{A} . (\bar{B} \times \overset{⇀}{C)}

\bar{A} . (\bar{B} \overset{⇀}{C)}

\bar{A} + (\bar{B} \times \overset{⇀}{C)}

\bar{A} . \bar{B} + \bar{B} . \overset{⇀}{C}

ANS : 3

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