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

Let a, b, c be distinct non-negative numbers. If the vectors a `hat(i) + a hat(j) + c hat(k), hat(i) + hat(k)` and `c hat(i) + c hat(j) + b hat(k)` lie in a plane, then c is

A

The arithmetic mean of a and b

B

The geometric mean of a and b

C

The harmonic man of a and b

D

0

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The correct Answer is:
B
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