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If P(0,5,6), Q(1,4,7), R(2,3,7) and S(6,5,16) are four points in space, then point nearest to the origin is

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answer is A.

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Detailed Solution

$O P = \sqrt{25 + 36} = \sqrt{61}$

$O Q = \sqrt{1 + 16 + 49}$ = $\sqrt{66}$

OR= $\sqrt{4 + 9 + 49}$ = $\sqrt{62}$

OS= $\sqrt{36 + 25 + 256}$ = $\sqrt{317}$

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