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If $\;\overrightarrow{|a|}=3\;,\overrightarrow{|b|}=3 \;$ and $\;|2\overrightarrow{a} - \overrightarrow{b}|=5\;$ , then $\;|2\overrightarrow{a} + \overrightarrow{b}|\;$ equals :

$(a)\;17\qquad(b)\;7\qquad(c)\;5\qquad(d)\;1$

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