The multiples of 21 are either odd numbers or even numbers. The odd multiples of 21 are 21, 63, 105, and so on. 42, 82, and so on are the even multiples of 21.
What is the LCM 3 and 20?
60
Answer: LCM of 3 and 20 is 60.
What are the least common multiples of 3?
Multiples of 3 are 3, 6, 9, 12, 15, 18, 21, 24… Multiples of 8 are 8, 16, 24, 32, 40… So the lowest common multiple of 3 and 8 is 24.
What are the first 3 common multiples of 7 and 21?
LCM of 7 and 21 is the smallest number among all common multiples of 7 and 21. The first few multiples of 7 and 21 are (7, 14, 21, 28, 35, 42, 49, . . . ) and (21, 42, 63, 84, 105, 126, 147, . . . ) respectively.
Which is the formula for the least common multiple?
The formula of LCM is LCM (a,b) = ( a × b) / GCF (a,b). We need to calculate greatest common factor 3 and 21, than apply into the LCM equation. Least common multiple can be found by multiplying the highest exponent prime factors of 3 and 21. First we will calculate the prime factors of 3 and 21. Prime factors of 3 are 3.
Which is the greatest common factor 3 and 21?
We need to calculate greatest common factor 3 and 21, than apply into the LCM equation. Least common multiple can be found by multiplying the highest exponent prime factors of 3 and 21. First we will calculate the prime factors of 3 and 21. Prime factors of 3 are 3. Prime factorization of 3 in exponential form is: Prime factors of 21 are 3, 7.
Which is the least common multiple of 11 33?
We can see, the first common multiple or the least common multiple of both the numbers is 33. Hence, the LCM (11, 33) = 33. Another method to find the LCM of the given numbers is prime factorization. Suppose, there are three numbers 12, 16 and 24. Let us write the prime factors of all three numbers individually.
How to calculate the LCM of 3, 21?
Prime factors of 3 are 3. Prime factorization of 3 in exponential form is: Prime factors of 21 are 3, 7. Prime factorization of 21 in exponential form is: Now multiplying the highest exponent prime factors to calculate the LCM of 3 and 21.
