# Question: What Is The LCM Of 15 And 21?

## What is the HCF of 15 and 35?

5Answer and Explanation: The greatest common factor of 35 and 15 is 5.

The ‘greatest common factor’ is sometimes called the ‘GCF.

‘ The GCF of 15 and 35 is the greatest….

## What is the LCM of 15?

LCM Example The multiples of 15 are : 15, 30, 45, 60, 75, 90, …. 60 is a common multiple (a multiple of both 12 and 15), and there are no lower common multiples. Therefore, the lowest common multiple of 12 and 15 is 60.

## What are the multiples of 15 and 21?

What is the LCM of 15 and 21The multiples of 15 are … , 90, 105, 120, ….The multiples of 21 are …, 84, 105, 126, …The common multiples of 15 and 21 are n x 105, intersecting the two sets above, n ≠ 0 ∈ Z n\neq 0 \thinspace\in\thinspace\mathbb{Z} n=0∈Z.More items…

## What is the LCM of 15 and 20?

To sum up, the lcm of 15 and 20 is 60. In common notation: lcm (15,20) = 60.

## What is the LCM of 10 15 and 20?

Answer: The LCM of 5 ,10, 15, 20 is 60. Therefore LCM of 5 ,10, 15, 20 is 60.

## What is the LCM of 20 and 18?

Least common multiple (LCM) of 20 and 18 is 180.

## What factors do 15 and 21 have in common?

The gcf of 15 and 21 can be obtained like this: The factors of 15 are 15, 5, 3, 1. The factors of 21 are 21, 7, 3, 1. The common factors of 15 and 21 are 3, 1, intersecting the two sets above.

## What is the least common multiple of 25 and 15?

75Least common multiple (LCM) of 15 and 25 is 75.

## What is the LCM for 15 and 10?

Least common multiple (LCM) of 10 and 15 is 30.

## What is the LCM of 14 and 21?

Least common multiple (LCM) of 14 and 21 is 42.

## What is the HCF of 5 10 and 15?

Factors of 15 = 1, 3, 5 and 15. Factors of 10 = 1, 2, 5 and 10. Therefore, common factor of 15 and 10 = 1 and 5. Highest common factor (H.C.F) of 15 and 10 = 5.

## What is the LCM 18 and 24?

Least common multiple (LCM) of 18 and 24 is 72.

## What is the LCM of 15 and 18?

Multiply the factors to get the LCM. The LCM of 15 and 18 is 90.

## What is the HCF of 15 and 30?

The common factors of 15 and 30 are 1, 3, 5, and 15. The greatest common factor is 15.

## What is the HCF of 5 15 and 20?

12:1The ratio between the LCM and HCF of 5 15 and 20 is​ 12:1.

## What is the HCF of 16?

Consider the highest common factor of 16 and 24 again. The common factors are 1, 2, 4 and 8. So, the highest common factor is 8.

## What is the LCM of 10 15 and 18?

The least common multiple 90 is a product of common & odd prime factors between the integers which is divisible by each one an integer of this same group. The step by step work for LCM of 10, 15 and 18 may useful to understand how to find LCM for two or three numbers.

## What is the LCM of 21 28?

Least common multiple (LCM) of 21 and 28 is 84.