Mathematics · 2014
JEE Main · 9 April 2014, Shift 1 · Q85
If | a |=2,| b |=3 and |2 a - b |=5, then |2 a + b | equals:
If $\displaystyle |\vec{a}|=2,|\vec{b}|=3$ and $\displaystyle |2 \vec{a}-\vec{b}|=5$, then $\displaystyle |2 \overrightarrow{\mathrm{a}}+\overrightarrow{\mathrm{b}}|$ equals :
Official answer
(3)
$\displaystyle 5$
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JEE Main 2014 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.