LCM of 7 and 21 is 21
LCM, abbreviation for least common multiple, is defined as the smallest number that is the product of two or more numbers 7 and 21
Hence, LCM of 7 and 21 is 21.
| 3 | 7 21 |
| 7 | 7 7 |
| 1 1 |
Hence, LCM of 7 and 21 is 3 x 7 = 21.
Hence, LCM of 7 and 21 is 21.
Franky and Joy are running on a circular track. They take 7 and 21 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 7 and 21.So, LCM of 7 and 21 is 21.
To find the least height in feet at which the two piles will be at same height we will find LCM of 7 and 21.So, LCM of 7 and 21 is 21.
To find the least number of textbooks that each company could have printed we need to find the LCM of 7 and 21.So, LCM of 7 and 21 is 21.
The problem can be solved using LCM, because we are trying to figure out the least time until they excercise together again.So, LCM of 7 and 21 is 21.
Greatest common factor or gcf of 7 and 21 is GCF(7, 21) x LCM(7, 21) = (7 x 21) / GCF(7, 21) = 21.
Least common multiple of 7 and 21 is 21.
Least number which is exactly divisible by 7 and 21 is 21.