JEE Math Practice Question
If (1, 5, 35), (7, 5, 5), (1, $$\lambda$$, 7) and (2$$\lambda$$, 1, 2) are coplanar, then the sum of all possible values of $$\lambda$$ is :
- A.$$ - {{44} \over 5}$$
- B.$$ - {{39} \over 5}$$
- C.$${{44} \over 5}$$
- D.$${{39} \over 5}$$
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