LCM of 21 and 84 is 84
In mathematics, least common multiple which is commonly known as LCM is defined as the smallest non-zero number which is divisible by both given numbers 21 and 84.
Hence, LCM of 21 and 84 is 84.
| 2 | 21 84 |
| 2 | 21 42 |
| 3 | 21 21 |
| 7 | 7 7 |
| 1 1 |
Hence, LCM of 21 and 84 is 2 x 2 x 3 x 7 = 84.
Hence, LCM of 21 and 84 is 84.
To find the least number of days that would be taken to be able to spend the same amount of dollars we need to find the LCM of 21 and 84.So, LCM of 21 and 84 is 84.
To find the least height in feet at which the two piles will be at same height we will find LCM of 21 and 84.So, LCM of 21 and 84 is 84.
To find the least number of textbooks that each company could have printed we need to find the LCM of 21 and 84.So, LCM of 21 and 84 is 84.
Ram and Deepika are running on a circular track. They take 21 and 84 minutes respectively to go round once. We need to find out at what time (minimum) they will run together again. For this we need to find the LCM of 21 and 84.So, LCM of 21 and 84 is 84.
Greatest common factor or gcf of 21 and 84 is GCF(21, 84) x LCM(21, 84) = (21 x 84) / GCF(21, 84) = 84.
Least common multiple of 21 and 84 is 84.
Least number which is exactly divisible by 21 and 84 is 84.