LCM of 30 and 92
1380 is the LCM of 30 and 92. 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 30 and 92, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 30 and 92?
lcm (30 92) = (?)
30 => 2 x 3 x 5
92 => 2 x 2 x 23
= 2 x 3 x 5 x 2 x 23
= 1380
lcm (30 and 92) = 1380
1380 is the LCM of 30 and 92.
where,
30 is a positive integer,
92 is a positive integer,
1380 is the LCM of 30 and 92,
{2} in {2 x 3 x 5, 2 x 2 x 23} is the common factors of 30 and 92,
{3 x 5 x 2 x 23} in {2 x 3 x 5, 2 x 2 x 23} are the uncommon factors of 30 and 92.
Use in Mathematics: LCM of 30 and 92
The below are some of the mathematical applications where lcm of 30 and 92 can be used:
- to find the least number which is exactly divisible by 30 and 92.
- to find the common denominator for two fractions having 30 and 92 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 30 and 92 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 30 seconds and bell B tolls at 92 seconds repeatedly. The answer is that all bells A and B toll together at 1380 seconds for the first time, at 2760 seconds for the second time, at 4140 seconds for the third time and so on.
Important Notes: 30 and 92 lcm
The below are the important notes to be remembered while solving the lcm of 30 and 92:
- The common prime factors and the remaining prime factors of 30 and 92 should be multiplied to find the least common multiple of 30 and 92, when solving lcm by using prime factors method.
- The results of lcm of 30 and 92, and the lcm of 92 and 30 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 30 and 92?
The below solved example with step by step work shows how to find what is the lcm of 30 and 92 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 30 and 92?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 30
B = 92
What to be found:
find the lcm of 30 and 92
step 2 Find the prime factors of 30 and 92:
Prime factors of 30 = 2 x 3 x 5
Prime factors of 92 = 2 x 2 x 23
step 3 Identify the repeated and non-repeated prime factors of 30 and 92:
{2} is the most repeated factor and {3 x 5 x 2 x 23} are the non-repeated factors of 30 and 92.
step 4 Find the product of repeated and non-repeated prime factors of 30 and 92:
= 2 x 3 x 5 x 2 x 23
= 1380
lcm(30 and 92) = 1380
Hence,
lcm of 30 and 92 is 1380
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 30 and 92.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 30 and 92
What to be found:
lcm (30, 92) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
30 and 92
step 3 Choose the divisor which divides each or most of the given integers (30 and 92), 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 30 and 92 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 30 | 92 |
| 2 | 15 | 46 |
| 3 | 15 | 23 |
| 5 | 5 | 23 |
| 23 | 1 | 23 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 30 and 92:
= 2 x 2 x 3 x 5 x 23
= 1380
LCM(30, 92) = 1380
The LCM of two numbers 30 and 92 is 1380