Find the least common multiple for 4 and 5.
7 answers
The least common multiple (LCM) of 4 and 5 is 20.
Find the least common multiple of 2 and 10.(
The least common multiple (LCM) of 2 and 10 is 10.
Find the least common multiple of 3 and 8.
To find the least common multiple (LCM) of 3 and 8, we can list out the multiples of each number and find the smallest number that appears in both lists:
Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ...
Multiples of 8: 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, ...
From these lists, we can see that the smallest number that appears in both lists is 24. Therefore, the LCM of 3 and 8 is 24.
Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ...
Multiples of 8: 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, ...
From these lists, we can see that the smallest number that appears in both lists is 24. Therefore, the LCM of 3 and 8 is 24.
Find the least common multiple of 7 and 11.
To find the least common multiple (LCM) of 7 and 11, we can use the formula:
LCM(a, b) = (a * b) / GCD(a, b)
Where GCD(a, b) is the greatest common divisor of a and b.
The greatest common divisor of 7 and 11 is 1 because they are both prime numbers and have no common factors other than 1.
Therefore, the LCM(7, 11) = (7 * 11) / 1 = 77. Thus, the least common multiple of 7 and 11 is 77.
LCM(a, b) = (a * b) / GCD(a, b)
Where GCD(a, b) is the greatest common divisor of a and b.
The greatest common divisor of 7 and 11 is 1 because they are both prime numbers and have no common factors other than 1.
Therefore, the LCM(7, 11) = (7 * 11) / 1 = 77. Thus, the least common multiple of 7 and 11 is 77.
2 answers