Math Problem Statement

What is the least common multiple of 18, 29, and 27?

Solution

The question asks for the least common multiple (LCM) of 18, 29, and 27.

To find the LCM of these numbers, follow these steps:

  1. Prime Factorization:

    • 18=2×3218 = 2 \times 3^2
    • 2929 is a prime number.
    • 27=3327 = 3^3
  2. Determine the highest powers of each prime factor:

    • For 2: the highest power is 212^1 (from 18).
    • For 3: the highest power is 333^3 (from 27).
    • For 29: the highest power is 29129^1 (since 29 is prime).
  3. Multiply the highest powers together:

    • LCM=21×33×291LCM = 2^1 \times 3^3 \times 29^1
    • =2×27×29= 2 \times 27 \times 29
    • =2×783=1566= 2 \times 783 = 1566

So, the least common multiple of 18, 29, and 27 is 1566.

Would you like more details or have any questions?

Here are 5 related questions:

  1. How do you find the greatest common divisor (GCD) of numbers?
  2. What are the prime factors of 72, and how do they relate to LCM?
  3. Can LCM and GCD be found using a Venn diagram of prime factors?
  4. How is the LCM used in adding or subtracting fractions?
  5. What is the difference between LCM and HCF?

Tip: Always find the LCM by identifying the highest powers of all primes in the factorization!

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Math Problem Analysis

Mathematical Concepts

Number Theory
Prime Factorization
Least Common Multiple (LCM)

Formulas

LCM = Product of the highest powers of all prime factors involved

Theorems

Fundamental Theorem of Arithmetic (Prime Factorization)

Suitable Grade Level

Grades 6-8