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If four points `2hat(i) + hat(j) + hat(k), hat(i) + hat(j) - hat(k), hat(j) - hat(k) and lamda hat(j) + hat(k)` are coplanar then `lamda` =

A

1

B

2

C

`-1`

D

0

Text Solution

Verified by Experts

The correct Answer is:
C
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