A) \[2\mathbf{a}+\mathbf{b}+\mathbf{c}\]
B) \[\mathbf{a}+2\mathbf{b}+\mathbf{c}\]
C) \[\mathbf{a}+\mathbf{b}+2\mathbf{c}\]
D) \[\mathbf{a}+\mathbf{b}+\mathbf{c}\]
Correct Answer: B
Solution :
\[\mathbf{v}=\mathbf{b}+\mathbf{c}\] ?..(i) \[\mathbf{w}=\mathbf{b}+\mathbf{a}\] ?..(ii) We have, \[\mathbf{x}=\mathbf{v}+\mathbf{w}=\mathbf{a}+2\mathbf{b}+\mathbf{c}\].
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