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$△$ ABC এর ভরকেন্দ্র G হলে নিচের কোনটি সঠিক?

\underset{A B}{\to} - \underset{A C}{\to} = \underset{B C}{\to}

\underset{A B}{\to} + \underset{A C}{\to} = \underset{B C}{\to}

\underset{A B}{\to} + \underset{A C}{\to} = 2 \underset{A D}{\to}

\underset{A D}{\to} + \underset{B E}{\to} - \underset{C F}{\to} = 0

ANS : 3

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