Calculators & Converters

    15, 24 and 60 LCM

    LCM - Least Common Multiple Calculator

    LCM of 15, 24 and 60 is equal to 120. The comprehensive work provides more insight of how to find what is the lcm of 15, 24 and 60 by using prime factors and special division methods, and the example use case of mathematics and real world problems.

    what is the lcm of 15, 24 and 60?
    lcm (15   24   60) = (?)
    15 => 3 x 5
    24 => 2 x 2 x 2 x 3
    60 => 2 x 2 x 3 x 5

    = 2 x 2 x 3 x 5 x 2
    = 120
    lcm (15, 24 and 60) = 120
    120 is the lcm of 15, 24 and 60.

    where,
    15 is a positive integer,
    24 is a positive integer,
    120 is the lcm of 15, 24 and 60,
    {2, 2, 3, 5} in {3 x 5, 2 x 2 x 2 x 3, 2 x 2 x 3 x 5} are the most repeated factors of 15, 24 and 60,
    {2} in {3 x 5, 2 x 2 x 2 x 3, 2 x 2 x 3 x 5} is the other remaining factors of 15, 24 and 60.

    Use in Mathematics: LCM of 15, 24 and 60
    The below are some of the mathematical applications where lcm of 15, 24 and 60 can be used:

    1. to find the least number which is exactly divisible by 15, 24 and 60.
    2. to find the common denominators for the fractions having 15, 24 and 60 as denominators in the unlike fractions addition or subtraction.
    Use in Real-world Problems: 15, 24 and 60 lcm
    In the context of lcm real world problems, the lcm of 15, 24 and 60 helps to find the exact time when three similar and recurring 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 all the bells A, B and C toll together, if bell A tolls at 15 seconds, B tolls at 24 seconds and C tolls at 60 seconds repeatedly. The answer is that all bells A, B and C toll together at 120 seconds for the first time, at 240 seconds for the second time, at 360 seconds for the third time and so on.

    Important Notes: 15, 24 and 60 lcm
    The below are the important notes to be remembered while solving the lcm of 15, 24 and 60:
    1. The repeated and non-repeated prime factors of 15, 24 and 60 should be multiplied to find the least common multiple of 15, 24 and 60, when solving lcm by using prime factors method.
    2. The results of lcm of 15, 24 and 60 is identical even if we change the order of given numbers in the lcm calculation, it means the order of given numbers in the lcm calculation doesn't affect the results.
    For values other than 15, 24 and 60, use this below tool:

    How-to: What is the LCM of 15, 24 and 60?

    The below solved example with step by step work shows how to find what is the lcm of 15, 24 and 60 by using either prime factors method and special division method.

    Solved example using prime factors method:
    What is the LCM of 15, 24 and 60?

    step 1 Address the input parameters, values and observe what to be found:
    Input parameters and values:
    A = 15
    B = 24
    C = 60

    What to be found:
    find the lcm of 15, 24 and 60

    step 2 Find the prime factors of 15, 24 and 60:
    Prime factors of 15 = 3 x 5
    Prime factors of 24 = 2 x 2 x 2 x 3
    Prime factors of 60 = 2 x 2 x 3 x 5

    step 3 Identify the repeated and non-repeated prime factors of 15, 24 and 60:
    {2, 2, 3, 5} are the most repeated factors and {2} is the non-repeated factors of 15, 24 and 60.

    step 4 Find the product of repeated and non-repeated prime factors of 15, 24 and 60:
    = 2 x 2 x 3 x 5 x 2
    = 120
    lcm(20 and 30) = 120

    Hence,
    lcm of 15, 24 and 60 is 120


    Solved example using special division method:
    This special division method is the easiest way to understand the entire calculation of what is the lcm of 15, 24 and 60.

    step 1 Address the input parameters, values and observe what to be found:
    Input parameters and values:
    Integers: 15, 24 and 60

    What to be found:
    lcm (15, 24, 60) = ?

    step 2 Arrange the given integers in the horizontal form with space or comma separated format:
    15, 24 and 60

    step 3 Choose the divisor which divides each or most of the given integers (15, 24 and 60), 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 15, 24 and 60 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:

    2152460
    2151230
    215615
    315315
    5515
    111

    step 4 Multiply the divisors to find the lcm of 15, 24 and 60:
    = 2 x 2 x 2 x 3 x 5
    = 120
    LCM(15, 24, 60) = 120

    The least common multiple for three numbers 15, 24 and 60 is 120
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