JAMB Mathematics 2009 Objective — Question 22
Question 22 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2009 Objective paper, with the correct answer and a full explanation.
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If Q = (9 -2; -7 4), then |Q| is
- A. -50
- B. -22
- C. 22Correct
- D. 50
Explanation
|Q| = 9(4) - (-2)(-7) = 36-14 = 22.
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