Post-UTME Mathematics 2015 Objective — Question 35
Question 35 of 40 from the Post-UTME Screening (Post-UTME) Mathematics 2015 Objective paper, with the correct answer and a full explanation.
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A number P is divisible exactly by 3, 5 and 7 and a number Q by 3, 5 and 7. The highest common factor of P and Q is
- A. 15
- B. 105
- C. a factor of 15
- D. a multiple of 15Correct
Explanation
Since both P and Q are multiples of 3x5x7=105, their HCF must be a multiple of 15.
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