1.

\[\overrightarrow{A}=2\hat{i}+\hat{j},\,B=3\hat{j}-\hat{k}\] and \[\overrightarrow{C}=6\hat{i}-2\hat{k}\].      Value of \[\overrightarrow{A}-2\overrightarrow{B}+3\overrightarrow{C}\] would be

A.      \[20\hat{i}+5\hat{j}+4\hat{k}\]
B.           \[20\hat{i}-5\hat{j}-4\hat{k}\]
C.      \[4\hat{i}+5\hat{j}+20\hat{k}\]
D.      \[5\hat{i}+4\hat{j}+10\hat{k}\]
Answer» C.      \[4\hat{i}+5\hat{j}+20\hat{k}\]


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