LCM of 63 and 245
2205 is the LCM of 63 and 245. 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 63 and 245, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 63 and 245?
lcm (63 245) = (?)
63 => 3 x 3 x 7
245 => 5 x 7 x 7
= 7 x 3 x 3 x 5 x 7
= 2205
lcm (63 and 245) = 2205
2205 is the LCM of 63 and 245.
where,
63 is a positive integer,
245 is a positive integer,
2205 is the LCM of 63 and 245,
{7} in {3 x 3 x 7, 5 x 7 x 7} is the common factors of 63 and 245,
{3 x 3 x 5 x 7} in {3 x 3 x 7, 5 x 7 x 7} are the uncommon factors of 63 and 245.
Use in Mathematics: LCM of 63 and 245
The below are some of the mathematical applications where lcm of 63 and 245 can be used:
- to find the least number which is exactly divisible by 63 and 245.
- to find the common denominator for two fractions having 63 and 245 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 63 and 245 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 63 seconds and bell B tolls at 245 seconds repeatedly. The answer is that all bells A and B toll together at 2205 seconds for the first time, at 4410 seconds for the second time, at 6615 seconds for the third time and so on.
Important Notes: 63 and 245 lcm
The below are the important notes to be remembered while solving the lcm of 63 and 245:
- The common prime factors and the remaining prime factors of 63 and 245 should be multiplied to find the least common multiple of 63 and 245, when solving lcm by using prime factors method.
- The results of lcm of 63 and 245, and the lcm of 245 and 63 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 63 and 245?
The below solved example with step by step work shows how to find what is the lcm of 63 and 245 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 63 and 245?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 63
B = 245
What to be found:
find the lcm of 63 and 245
step 2 Find the prime factors of 63 and 245:
Prime factors of 63 = 3 x 3 x 7
Prime factors of 245 = 5 x 7 x 7
step 3 Identify the repeated and non-repeated prime factors of 63 and 245:
{7} is the most repeated factor and {3 x 3 x 5 x 7} are the non-repeated factors of 63 and 245.
step 4 Find the product of repeated and non-repeated prime factors of 63 and 245:
= 7 x 3 x 3 x 5 x 7
= 2205
lcm(63 and 245) = 2205
Hence,
lcm of 63 and 245 is 2205
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 63 and 245.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 63 and 245
What to be found:
lcm (63, 245) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
63 and 245
step 3 Choose the divisor which divides each or most of the given integers (63 and 245), 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 63 and 245 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 3 | 63 | 245 |
| 3 | 21 | 245 |
| 5 | 7 | 245 |
| 7 | 7 | 49 |
| 7 | 1 | 7 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 63 and 245:
= 3 x 3 x 5 x 7 x 7
= 2205
LCM(63, 245) = 2205
The LCM of two numbers 63 and 245 is 2205