LCM of 78 and 101
7878 is the LCM of 78 and 101. The step-by-step solution using prime factors and special division methods is one of the simple methods to easily understand how to find what is the LCM of 78 and 101, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 78 and 101?
lcm (78 101) = (?)
78 => 2 x 3 x 13
101 => 101
= 2 x 3 x 13 x 101
= 7878
lcm (78 and 101) = 7878
7878 is the LCM of 78 and 101.
where,
78 is a positive integer,
101 is a positive integer,
7878 is the LCM of 78 and 101,
There is no common factors of 78 and 101 in {2 x 3 x 13, 101},
{2 x 3 x 13 x 101} in {2 x 3 x 13, 101} are the uncommon factors of 78 and 101.
Use in Mathematics: LCM of 78 and 101
The below are some of the mathematical applications where lcm of 78 and 101 can be used:
- to find the least number which is exactly divisible by 78 and 101.
- to find the common denominator for two fractions having 78 and 101 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 78 and 101 helps to find the exact time when two similar and recurring events with different time schedule happens together at the same time. For example, the real world problems involve lcm in situations to find at what time the bells A and B all toll together, if bell A tolls at 78 seconds and bell B tolls at 101 seconds repeatedly. The answer is that all bells A and B toll together at 7878 seconds for the first time, at 15756 seconds for the second time, at 23634 seconds for the third time and so on.
Important Notes: 78 and 101 lcm
The below are the important notes to be remembered while solving the lcm of 78 and 101:
- The common prime factors and the remaining prime factors of 78 and 101 should be multiplied to find the least common multiple of 78 and 101, when solving lcm by using prime factors method.
- The results of lcm of 78 and 101, and the lcm of 101 and 78 are identical, it means the order of given numbers in the lcm calculation doesn't affect the results.
How-to: What is the LCM of 78 and 101?
The below solved example with step by step work shows how to find what is the lcm of 78 and 101 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 78 and 101?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 78
B = 101
What to be found:
find the lcm of 78 and 101
step 2 Find the prime factors of 78 and 101:
Prime factors of 78 = 2 x 3 x 13
Prime factors of 101 = 101
step 3Identify the repeated and non-repeated prime factors of 78 and 101:
Since there is no common factors between 78 and 101, multiplying the given numbers directly provides the LCM of
78 and 101.
= 78 x 101
= 7878
lcm(78 and 101) = 7878
Hence,
lcm of 78 and 101 is 7878
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 78 and 101.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 78 and 101
What to be found:
lcm (78, 101) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
78 and 101
step 3 Choose the divisor which divides each or most of the given integers (78 and 101), divide each integers separately and write down the quotient in the next line right under the respective integers. Bring down the integer to the next line if any integer in 78 and 101 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 78 | 101 |
| 3 | 39 | 101 |
| 13 | 13 | 101 |
| 101 | 1 | 101 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 78 and 101:
= 2 x 3 x 13 x 101
= 7878
LCM(78, 101) = 7878
The LCM of two numbers 78 and 101 is 7878