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

Let `a, b,c` be distinct non-negative numbers. If the vectors `ai + aj + ck, i + k` and `ci + cj + bk` lie in a plane, then c is the

A

equal to zero

B

the harmonic mean of a and b

C

the geometric mean of a and b

D

the arithmetic mean of a and b

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The correct Answer is:
C
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MCGROW HILL PUBLICATION-VECTOR ALGEBRA-QUESTIONS FROM PREVIOUS YEARS. AIEEE/JEE MAIN PAPERS
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  8. Let vec(a) = hat(i) + hat(j) + hat(k),vec(b) = hat(i) - hat(j) + 2hat(...

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  14. Let veca =hatj-hatk and vecc =hati-hatj-hatk. Then the vector b satisf...

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