LCM of 3 and 24
LCM of 3 and 24 is the smallest number among all common multiples of 3 and 24. The first few multiples of 3 and 24 are (3, 6, 9, 12, 15, 18, 21, . . . ) and (24, 48, 72, 96, . . . ) respectively. There are 3 commonly used methods to find LCM of 3 and 24 - by listing multiples, by division method, and by prime factorization.
1. | LCM of 3 and 24 |
2. | List of Methods |
3. | Solved Examples |
4. | FAQs |
What is the LCM of 3 and 24?
Answer: LCM of 3 and 24 is 24.
Explanation:
The LCM of two non-zero integers, x(3) and y(24), is the smallest positive integer m(24) that is divisible by both x(3) and y(24) without any remainder.
Methods to Find LCM of 3 and 24
The methods to find the LCM of 3 and 24 are explained below.
- By Prime Factorization Method
- By Division Method
- By Listing Multiples
LCM of 3 and 24 by Prime Factorization
Prime factorization of 3 and 24 is (3) = 31 and (2 × 2 × 2 × 3) = 23 × 31 respectively. LCM of 3 and 24 can be obtained by multiplying prime factors raised to their respective highest power, i.e. 23 × 31 = 24.
Hence, the LCM of 3 and 24 by prime factorization is 24.
LCM of 3 and 24 by Division Method
To calculate the LCM of 3 and 24 by the division method, we will divide the numbers(3, 24) by their prime factors (preferably common). The product of these divisors gives the LCM of 3 and 24.
- Step 1: Find the smallest prime number that is a factor of at least one of the numbers, 3 and 24. Write this prime number(2) on the left of the given numbers(3 and 24), separated as per the ladder arrangement.
- Step 2: If any of the given numbers (3, 24) is a multiple of 2, divide it by 2 and write the quotient below it. Bring down any number that is not divisible by the prime number.
- Step 3: Continue the steps until only 1s are left in the last row.
The LCM of 3 and 24 is the product of all prime numbers on the left, i.e. LCM(3, 24) by division method = 2 × 2 × 2 × 3 = 24.
LCM of 3 and 24 by Listing Multiples
To calculate the LCM of 3 and 24 by listing out the common multiples, we can follow the given below steps:
- Step 1: List a few multiples of 3 (3, 6, 9, 12, 15, 18, 21, . . . ) and 24 (24, 48, 72, 96, . . . . )
- Step 2: The common multiples from the multiples of 3 and 24 are 24, 48, . . .
- Step 3: The smallest common multiple of 3 and 24 is 24.
∴ The least common multiple of 3 and 24 = 24.
☛ Also Check:
- LCM of 4, 7 and 14 - 28
- LCM of 56 and 84 - 168
- LCM of 4, 8 and 16 - 16
- LCM of 8 and 64 - 64
- LCM of 7 and 21 - 21
- LCM of 6, 9 and 12 - 36
- LCM of 12 and 40 - 120
LCM of 3 and 24 Examples
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Example 1: The product of two numbers is 72. If their GCD is 3, what is their LCM?
Solution:
Given: GCD = 3
product of numbers = 72
∵ LCM × GCD = product of numbers
⇒ LCM = Product/GCD = 72/3
Therefore, the LCM is 24.
The probable combination for the given case is LCM(3, 24) = 24. -
Example 2: Find the smallest number that is divisible by 3 and 24 exactly.
Solution:
The smallest number that is divisible by 3 and 24 exactly is their LCM.
⇒ Multiples of 3 and 24:- Multiples of 3 = 3, 6, 9, 12, 15, 18, 21, 24, . . . .
- Multiples of 24 = 24, 48, 72, 96, 120, 144, 168, . . . .
Therefore, the LCM of 3 and 24 is 24.
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Example 3: The GCD and LCM of two numbers are 3 and 24 respectively. If one number is 3, find the other number.
Solution:
Let the other number be z.
∵ GCD × LCM = 3 × z
⇒ z = (GCD × LCM)/3
⇒ z = (3 × 24)/3
⇒ z = 24
Therefore, the other number is 24.
FAQs on LCM of 3 and 24
What is the LCM of 3 and 24?
The LCM of 3 and 24 is 24. To find the least common multiple of 3 and 24, we need to find the multiples of 3 and 24 (multiples of 3 = 3, 6, 9, 12 . . . . 24; multiples of 24 = 24, 48, 72, 96) and choose the smallest multiple that is exactly divisible by 3 and 24, i.e., 24.
What is the Least Perfect Square Divisible by 3 and 24?
The least number divisible by 3 and 24 = LCM(3, 24)
LCM of 3 and 24 = 2 × 2 × 2 × 3 [Incomplete pair(s): 2, 3]
⇒ Least perfect square divisible by each 3 and 24 = LCM(3, 24) × 2 × 3 = 144 [Square root of 144 = √144 = ±12]
Therefore, 144 is the required number.
If the LCM of 24 and 3 is 24, Find its GCF.
LCM(24, 3) × GCF(24, 3) = 24 × 3
Since the LCM of 24 and 3 = 24
⇒ 24 × GCF(24, 3) = 72
Therefore, the GCF = 72/24 = 3.
Which of the following is the LCM of 3 and 24? 11, 20, 25, 24
The value of LCM of 3, 24 is the smallest common multiple of 3 and 24. The number satisfying the given condition is 24.
How to Find the LCM of 3 and 24 by Prime Factorization?
To find the LCM of 3 and 24 using prime factorization, we will find the prime factors, (3 = 3) and (24 = 2 × 2 × 2 × 3). LCM of 3 and 24 is the product of prime factors raised to their respective highest exponent among the numbers 3 and 24.
⇒ LCM of 3, 24 = 23 × 31 = 24.
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