What is the LCM of 21 42 and 84?

Answer 1

Well, isn't that a happy little math problem! To find the Least Common Multiple (LCM) of 21, 42, and 84, we look for the smallest number that all three can divide into evenly. First, we see that 84 is the largest number, so we start by checking if it is divisible by 21 and 42. Since 84 is divisible by both 21 and 42, the LCM of 21, 42, and 84 is 84. Just like painting a beautiful landscape, it's all about finding harmony and balance in numbers!

Answer 2

To find the Least Common Multiple (LCM) of 21, 42, and 84, we need to first factorize each number into its prime factors.

21 = 3 x 7 42 = 2 x 3 x 7 84 = 2 x 2 x 3 x 7

Then, we take the highest power of each prime factor that appears in any of the numbers: 2^2 x 3 x 7 = 84.

Therefore, the LCM of 21, 42, and 84 is 84.

Answer 3

Well, honey, the least common multiple (LCM) of 21, 42, and 84 is 84. You see, 84 is the smallest number that all three of these numbers can divide into evenly. So there you have it, no need to overcomplicate things, darling.

Answer 4

84

Answer 5

84