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Find the value of lamda, if the points w...

Find the value of `lamda`, if the points with position vectors `3hat(i)- 2hat(j)- hat(k), 2hat(i) + 3hat(j)- 4hat(k), -hat(i) + hat(j) + 2hat(k), 4hat(i) + 5hat(j) + lamda hat(k)` are coplanar.

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