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Which number is a multiple of both 3 and 5?

A14
B16
C13
D15
Answer & Solution
Correct answer: D. 15
1. Some numbers are multiples of both 3 and 5. 2. 15 is 3 times 5, so both divide it exactly. 3. So the correct answer is 15. _Source: syllabus Mathematics, 'Math-Magic', Ch 6 'Be My Multiple, I'll be Your Factor'_
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