## What are the factors common to 42 and 63?

There are 4 common factors of 42 and 63, that are 1, 3, 21, and 7. Therefore, the greatest common factor of 42 and 63 is 21.

**How do you find the least common multiple of 42?**

To find the LCM of 42 and 54 using prime factorization, we will find the prime factors, (42 = 2 × 3 × 7) and (54 = 2 × 3 × 3 × 3). LCM of 42 and 54 is the product of prime factors raised to their respective highest exponent among the numbers 42 and 54. ⇒ LCM of 42, 54 = 21 × 33 × 71 = 378.

### What is the least common multiple of 15 and 75?

Answer: LCM of 15 and 75 is 75.

**What is the least common multiple of 33 55?**

To sum up, the lcm of 33 and 55 is 165. In common notation: lcm (33,55) = 165.

## What is the HCF of 63 42 and 91?

i.e., the Highest Common Factor of the three given numbers by using the prime factorisation method. Thus, the H.C.F. of 63, 42 और 91 is → 7.

**What are multiples of 63?**

There are infinite multiples of 63. The first 5 multiples are 63, 126, 189, 252, and 315.

### What is the LCM of 63?

The LCM of 63, 70, and 77 is 6930. To find the least common multiple of 63, 70, and 77, we need to find the multiples of 63, 70, and 77 (multiples of 63 = 63, 126, 189, 252 . . . .

**What is the HCF of 42?**

FAQs on HCF of 36 and 42 The HCF of 36 and 42 is 6. To calculate the HCF (Highest Common Factor) of 36 and 42, we need to factor each number (factors of 36 = 1, 2, 3, 4, 6, 9, 12, 18, 36; factors of 42 = 1, 2, 3, 6, 7, 14, 21, 42) and choose the highest factor that exactly divides both 36 and 42, i.e., 6.

## What is the LCM of 7 21 and 63?

Calculate the LCM The least common multiple of 7, 21 and 63 is 63.

**What is the HCF of 33 and 55?**

What is the GCF of 33 and 55? The GCF of 33 and 55 is 11.

### What is the LCM of 8 and 30?

120

Answer: LCM of 8 and 30 is 120.

**What are the prime factors of 42 and 63?**

First we will calculate the prime factors of 42 and 63. Prime factors of 42 are 2, 3, 7. Prime factorization of 42 in exponential form is: Prime factors of 63 are 3, 7. Prime factorization of 63 in exponential form is:

## Which is the highest exponent prime factor of 63?

Prime factors of 63 are 3, 7. Prime factorization of 63 in exponential form is: Now multiplying the highest exponent prime factors to calculate the LCM of 42 and 63.

**How to calculate the least common multiple ( LCM )?**

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor. The formula of LCM is LCM (a,b) = ( a × b) / GCF (a,b).