All numbers that are evenly divisible by both 14 and 6 are also divisible by which of the following numbers ?
8
12
21
28
Please explain how you got the answer :)
I got 21...
Math word problem help?
2017-01-20 5:20 pm
回答 (2)
2017-01-20 5:28 pm
✔ 最佳答案
14 = 2 × 76 = 2 × 3
The smallest common multiple of 14 and 6 = 2 × 3 × 7 = 42
42 is divisible by 21, but NOT divisible by 8, 12 or 28.
The answer: 21
2017-01-20 7:05 pm
14 = 2×7
6 = 2×3
LCM(14,6) = 2×3×7
Any answer must be the product of factors of the LCM.
21 = 3×7. The others fail.
6 = 2×3
LCM(14,6) = 2×3×7
Any answer must be the product of factors of the LCM.
21 = 3×7. The others fail.
收錄日期: 2021-04-18 15:57:24
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20170120092003AAS6XjV