What is the condition for the vectors 2i+3j-4k and 3i-aj+bk to be para

1.	What is the condition for the vectors 2i+3j-4k and 3i-aj+bk to be parallel ?
Answer» `a=-9//2, b=-6` `a=-6, b=-9//2` a = 4, b =5 a = 8, b = 2 ANSWER :A

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