The least number of four digits which is divisible by 4, 6, 8 and 10 is_________?
Correct answer: A. 1080
- A. 1080
- B. 1085
- C. 1075
- D. 1095
Explanation
The least common multiple of 4, 6, 8 and 10 is 120, since 120 is the smallest number divisible by all four. The first four-digit multiple is 120 x 9 = 1080. Students may choose 1085 because it is near the result, but it is not divisible by 4, 6, 8 and 10.
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