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IIT JEE 2007 Practice : MATHEMATICS - 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.
Quiz Review
Multiple choice

Your Performance  

Given: a = i + j + k, a . b = 1 and a × b = jk. Then, b is equal to

  2i + k




  Half-n-half Clue

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