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Let a,b,c be distinct non-negative numbe...

Let `a,b,c` be distinct non-negative numbers. If the vectors `ahati+ahatj+chatk, hati+hatk` and `chati+chatj+bhatk` lies in a plane then `c` is

A

HM of a and b

B

0

C

AM of a and b

D

GM of a and b

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The correct Answer is:
D
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