LCM of 4 and 24
LCM of 4 and 24 is the smallest number among all common multiples of 4 and 24. The first few multiples of 4 and 24 are (4, 8, 12, 16, . . . ) and (24, 48, 72, 96, . . . ) respectively. There are 3 commonly used methods to find LCM of 4 and 24 - by listing multiples, by division method, and by prime factorization.
1. | LCM of 4 and 24 |
2. | List of Methods |
3. | Solved Examples |
4. | FAQs |
What is the LCM of 4 and 24?
Answer: LCM of 4 and 24 is 24.
Explanation:
The LCM of two non-zero integers, x(4) and y(24), is the smallest positive integer m(24) that is divisible by both x(4) and y(24) without any remainder.
Methods to Find LCM of 4 and 24
Let's look at the different methods for finding the LCM of 4 and 24.
- By Listing Multiples
- By Division Method
- By Prime Factorization Method
LCM of 4 and 24 by Listing Multiples
To calculate the LCM of 4 and 24 by listing out the common multiples, we can follow the given below steps:
- Step 1: List a few multiples of 4 (4, 8, 12, 16, . . . ) and 24 (24, 48, 72, 96, . . . . )
- Step 2: The common multiples from the multiples of 4 and 24 are 24, 48, . . .
- Step 3: The smallest common multiple of 4 and 24 is 24.
∴ The least common multiple of 4 and 24 = 24.
LCM of 4 and 24 by Division Method
To calculate the LCM of 4 and 24 by the division method, we will divide the numbers(4, 24) by their prime factors (preferably common). The product of these divisors gives the LCM of 4 and 24.
- Step 1: Find the smallest prime number that is a factor of at least one of the numbers, 4 and 24. Write this prime number(2) on the left of the given numbers(4 and 24), separated as per the ladder arrangement.
- Step 2: If any of the given numbers (4, 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 4 and 24 is the product of all prime numbers on the left, i.e. LCM(4, 24) by division method = 2 × 2 × 2 × 3 = 24.
LCM of 4 and 24 by Prime Factorization
Prime factorization of 4 and 24 is (2 × 2) = 22 and (2 × 2 × 2 × 3) = 23 × 31 respectively. LCM of 4 and 24 can be obtained by multiplying prime factors raised to their respective highest power, i.e. 23 × 31 = 24.
Hence, the LCM of 4 and 24 by prime factorization is 24.
☛ Also Check:
- LCM of 12, 15, 20 and 27 - 540
- LCM of 21 and 28 - 84
- LCM of 40 and 50 - 200
- LCM of 6 and 9 - 18
- LCM of 4, 5 and 8 - 40
- LCM of 3, 6 and 7 - 42
- LCM of 36 and 63 - 252
LCM of 4 and 24 Examples
-
Example 1: Find the smallest number that is divisible by 4 and 24 exactly.
Solution:
The smallest number that is divisible by 4 and 24 exactly is their LCM.
⇒ Multiples of 4 and 24:- Multiples of 4 = 4, 8, 12, 16, 20, 24, . . . .
- Multiples of 24 = 24, 48, 72, 96, 120, 144, . . . .
Therefore, the LCM of 4 and 24 is 24.
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Example 2: Verify the relationship between GCF and LCM of 4 and 24.
Solution:
The relation between GCF and LCM of 4 and 24 is given as,
LCM(4, 24) × GCF(4, 24) = Product of 4, 24
Prime factorization of 4 and 24 is given as, 4 = (2 × 2) = 22 and 24 = (2 × 2 × 2 × 3) = 23 × 31
LCM(4, 24) = 24
GCF(4, 24) = 4
LHS = LCM(4, 24) × GCF(4, 24) = 24 × 4 = 96
RHS = Product of 4, 24 = 4 × 24 = 96
⇒ LHS = RHS = 96
Hence, verified. -
Example 3: The GCD and LCM of two numbers are 4 and 24 respectively. If one number is 4, find the other number.
Solution:
Let the other number be b.
∵ GCD × LCM = 4 × b
⇒ b = (GCD × LCM)/4
⇒ b = (4 × 24)/4
⇒ b = 24
Therefore, the other number is 24.
FAQs on LCM of 4 and 24
What is the LCM of 4 and 24?
The LCM of 4 and 24 is 24. To find the least common multiple (LCM) of 4 and 24, we need to find the multiples of 4 and 24 (multiples of 4 = 4, 8, 12, 16 . . . . 24; multiples of 24 = 24, 48, 72, 96) and choose the smallest multiple that is exactly divisible by 4 and 24, i.e., 24.
Which of the following is the LCM of 4 and 24? 12, 40, 24, 16
The value of LCM of 4, 24 is the smallest common multiple of 4 and 24. The number satisfying the given condition is 24.
How to Find the LCM of 4 and 24 by Prime Factorization?
To find the LCM of 4 and 24 using prime factorization, we will find the prime factors, (4 = 2 × 2) and (24 = 2 × 2 × 2 × 3). LCM of 4 and 24 is the product of prime factors raised to their respective highest exponent among the numbers 4 and 24.
⇒ LCM of 4, 24 = 23 × 31 = 24.
If the LCM of 24 and 4 is 24, Find its GCF.
LCM(24, 4) × GCF(24, 4) = 24 × 4
Since the LCM of 24 and 4 = 24
⇒ 24 × GCF(24, 4) = 96
Therefore, the greatest common factor = 96/24 = 4.
What is the Relation Between GCF and LCM of 4, 24?
The following equation can be used to express the relation between GCF and LCM of 4 and 24, i.e. GCF × LCM = 4 × 24.
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