LCM of 7 and 248
1736 is the LCM of 7 and 248. 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 7 and 248, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 7 and 248?
lcm (7 248) = (?)
7 => 7
248 => 2 x 2 x 2 x 31
= 7 x 2 x 2 x 2 x 31
= 1736
lcm (7 and 248) = 1736
1736 is the LCM of 7 and 248.
where,
7 is a positive integer,
248 is a positive integer,
1736 is the LCM of 7 and 248,
There is no common factors of 7 and 248 in {7, 2 x 2 x 2 x 31},
{7 x 2 x 2 x 2 x 31} in {7, 2 x 2 x 2 x 31} are the uncommon factors of 7 and 248.
Use in Mathematics: LCM of 7 and 248
The below are some of the mathematical applications where lcm of 7 and 248 can be used:
- to find the least number which is exactly divisible by 7 and 248.
- to find the common denominator for two fractions having 7 and 248 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 7 and 248 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 7 seconds and bell B tolls at 248 seconds repeatedly. The answer is that all bells A and B toll together at 1736 seconds for the first time, at 3472 seconds for the second time, at 5208 seconds for the third time and so on.
Important Notes: 7 and 248 lcm
The below are the important notes to be remembered while solving the lcm of 7 and 248:
- The common prime factors and the remaining prime factors of 7 and 248 should be multiplied to find the least common multiple of 7 and 248, when solving lcm by using prime factors method.
- The results of lcm of 7 and 248, and the lcm of 248 and 7 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 7 and 248?
The below solved example with step by step work shows how to find what is the lcm of 7 and 248 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 7 and 248?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 7
B = 248
What to be found:
find the lcm of 7 and 248
step 2 Find the prime factors of 7 and 248:
Prime factors of 7 = 7
Prime factors of 248 = 2 x 2 x 2 x 31
step 3Identify the repeated and non-repeated prime factors of 7 and 248:
Since there is no common factors between 7 and 248, multiplying the given numbers directly provides the LCM of
7 and 248.
= 7 x 248
= 1736
lcm(7 and 248) = 1736
Hence,
lcm of 7 and 248 is 1736
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 7 and 248.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 7 and 248
What to be found:
lcm (7, 248) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
7 and 248
step 3 Choose the divisor which divides each or most of the given integers (7 and 248), 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 7 and 248 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 7 | 248 |
| 2 | 7 | 124 |
| 2 | 7 | 62 |
| 7 | 7 | 31 |
| 31 | 1 | 31 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 7 and 248:
= 2 x 2 x 2 x 7 x 31
= 1736
LCM(7, 248) = 1736
The LCM of two numbers 7 and 248 is 1736