The centre of the circle given by \[\mathbf{r}.(\mathbf{i}+2\mathbf{j}+2\mathbf{k})=15\] and \[|\mathbf{r}-(\mathbf{j}+2\mathbf{k})|=4\]is

The centre of the circle given by \[\mathbf{r}.(\mathbf{i}+2\mathbf{j}

1.	The centre of the circle given by \[\mathbf{r}.(\mathbf{i}+2\mathbf{j}+2\mathbf{k})=15\] and \[\|\mathbf{r}-(\mathbf{j}+2\mathbf{k})\|=4\]is
A.	(0, 1, 2)
B.	(1, 3, 4)
C.	(?1, 3, 4)
D.	None of these
Answer» C. (?1, 3, 4)

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The centre of the circle given by \[\mathbf{r}.(\mathbf{i}+2\mathbf{j}+2\mathbf{k})=15\] and \[|\mathbf{r}-(\mathbf{j}+2\mathbf{k})|=4\]is

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