Find the greatest common factor and least common multiple of the following groups: 18 and 24 & nbsp; 15 and 20 & nbsp; 48 and 72 15 and 45 & nbsp; 7 and 8 & nbsp; 60 and 72

18 = 2 × 3 × 324 = 2 × 2 × 2 × 3, so the greatest common factor of 18 and 24 is 2 × 3 = 6, and the least common multiple is 2 × 3 × 3 × 2 × 2 = 72; 15 = 3 × 520 = 2 × 2 × 5, so the greatest common factor of 15 and 20 is 5, and the least common multiple is 5 × 3 × 2 × 2 = 60; 48 = 2 × 2 × 2 × 2 × 372 = 2 × 2 × 2 × 3 × 3, so the greatest common factor of 48 and 72 is 2 × 2 × 2 × 3 = 24, and the least common multiple is 2 × 2 × 2 × 3 × 3 = 144; 45 = 15 × 3, so the greatest common factor of 15 and 45 7 and 8 are coprime, so the greatest common factor of 7 and 8 is 1, the least common multiple is 7 × 8 = 56; 60 = 2 × 2 × 3 × 572 = 2 × 2 × 3 × 3, so the greatest common factor of 60 and 72 is 2 × 2 × 3, and the least common multiple is 2 × 2 × 3 × 5 × 2 × 3 = 360

A. The least common factor of two numbers B is 18. The common multiple of these two numbers within 50 is ()
What are the numbers?

36, and you seem to have the wrong number. If it's the greatest common factor, then it's 36. Moreover, there's absolutely something wrong with your question. You didn't say that ab can exceed 50. Ah, if one of AB exceeds 50, you can't do it

The maximum factor of a number is 18, and the minimum multiple of a number is 24. Their maximum common factor and minimum common multiple are ()
A. 2，36B. 6，72C. 3，48D. 72，6

If the maximum factor of a number is 18, then the number must be 18. If the minimum multiple of a number is 24, then the number must be 24. 18 = 2 × 3 × 3, 24 = 2 × 2 × 2 × 3. Therefore, the maximum common factor of 18 and 24 is 2 × 3 = 6, and the minimum common multiple is 2 × 3 × 3 × 4 = 72, respectively

1. What are 3 and 7 of 21? A. common factor B. common multiple C. multiple D. prime factor
I didn't expect such an answer
It's a factor
The prime factor does not include one
1 is not prime

Find the greatest common factor and least common multiple of the following groups: 18 and 24 & nbsp; 15 and 20 & nbsp; 48 and 72 15 and 45 & nbsp; 7 and 8 & nbsp; 60 and 72