Post-UTME Mathematics 2013 Objective — Question 21
Question 21 of 100 from the Post-UTME Screening (Post-UTME) Mathematics 2013 Objective paper, with the correct answer and a full explanation.
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If a*b=±√ab, evaluate 2*(12*27)
- A. 12
- B. 9
- C. 6Correct
- D. 2
Explanation
12*27=√(12×27)=√324=18. Then 2*18=√36=6.
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