LCM of 22 and 91
2002 is the LCM of 22 and 91. 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 22 and 91, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 22 and 91?
lcm (22 91) = (?)
22 => 2 x 11
91 => 7 x 13
= 2 x 11 x 7 x 13
= 2002
lcm (22 and 91) = 2002
2002 is the LCM of 22 and 91.
where,
22 is a positive integer,
91 is a positive integer,
2002 is the LCM of 22 and 91,
There is no common factors of 22 and 91 in {2 x 11, 7 x 13},
{2 x 11 x 7 x 13} in {2 x 11, 7 x 13} are the uncommon factors of 22 and 91.
Use in Mathematics: LCM of 22 and 91
The below are some of the mathematical applications where lcm of 22 and 91 can be used:
- to find the least number which is exactly divisible by 22 and 91.
- to find the common denominator for two fractions having 22 and 91 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 22 and 91 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 22 seconds and bell B tolls at 91 seconds repeatedly. The answer is that all bells A and B toll together at 2002 seconds for the first time, at 4004 seconds for the second time, at 6006 seconds for the third time and so on.
Important Notes: 22 and 91 lcm
The below are the important notes to be remembered while solving the lcm of 22 and 91:
- The common prime factors and the remaining prime factors of 22 and 91 should be multiplied to find the least common multiple of 22 and 91, when solving lcm by using prime factors method.
- The results of lcm of 22 and 91, and the lcm of 91 and 22 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 22 and 91?
The below solved example with step by step work shows how to find what is the lcm of 22 and 91 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 22 and 91?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 22
B = 91
What to be found:
find the lcm of 22 and 91
step 2 Find the prime factors of 22 and 91:
Prime factors of 22 = 2 x 11
Prime factors of 91 = 7 x 13
step 3Identify the repeated and non-repeated prime factors of 22 and 91:
Since there is no common factors between 22 and 91, multiplying the given numbers directly provides the LCM of
22 and 91.
= 22 x 91
= 2002
lcm(22 and 91) = 2002
Hence,
lcm of 22 and 91 is 2002
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 22 and 91.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 22 and 91
What to be found:
lcm (22, 91) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
22 and 91
step 3 Choose the divisor which divides each or most of the given integers (22 and 91), 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 22 and 91 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 22 | 91 |
| 7 | 11 | 91 |
| 11 | 11 | 13 |
| 13 | 1 | 13 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 22 and 91:
= 2 x 7 x 11 x 13
= 2002
LCM(22, 91) = 2002
The LCM of two numbers 22 and 91 is 2002