IIT JEE 2006 Paper : MATHEMATICS Section I - Multiple Choice

Each question below has only one correct answer.
In the IIT-JEE, you will be awarded 3 marks for each correct answer and −1 for each incorrect answer.
You will be awarded 0 marks for not attempting a question.

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Multiple choice

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Given three vectors a = i + j + k,   b = i −j + k,   c = i + j − k such that another vector d lying in the plane of a and b has its projection on c equal to (1/√3) units. Then d is   3i + j + 3k   3i + 2j + k   2i + 3j + k   i + j + 4k   Hint Half-n-half Clue

 

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