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## What is the greatest prime factor of 30?

The prime factors of 30 are 5, 3 and 2. The prime numbers 5 and 3 are both factors that are common to 30 and 75. The product of these factors is 3×5 = 15. Thus, the “Greatest Common Factor” of 30 and 75 is 15.

**How do you find the factor of 30?**

Factor Pairs of 30

- 1 x 30 = 30.
- 2 x 15 = 30.
- 3 x 10 = 30.
- 5 x 6 = 30.

### What factors are common to 15 and 30?

There are 4 common factors of 15 and 30, that are 1, 3, 5, and 15. Therefore, the greatest common factor of 15 and 30 is 15.

**What is the Prime Factors of 77?**

The factors of 77 by prime factorization are 1, 7, 11, and 77.

#### What are some factor pairs of 30?

The positive pair factors of 30 are (1, 30), (2, 15), (3, 10) and (5, 6).

**What is the HCF of 15 25 and 30?**

5

Answer: HCF of 15, 25 and 30 is 5.

## Does 15 and 30 have a GCF of 5?

As you can see when you list out the factors of each number, 5 is the greatest number that 5, 15, and 30 divides into.

**What are the Prime Factors of 28?**

Its Prime Factors are 1, 2, 4, 7, 14, 28 and (1, 28), (2, 14) and (4, 7) are Pair Factors.

### What are the Prime Factors of 90?

Therefore the prime factorization of 90 is 90 =3 × 3 × 5 × 2. Taking another prime number which is a factor of 90. Let us divide 90 by the number 2 (even prime number).

**What is the multiple of 30?**

Multiples of 30: 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330… Common multiples of 25 and 30 include 150 and 300. The lowest common multiple or least common multiple is the lowest multiple two numbers have in common.

#### What is the HCF of 25 and 30?

GCF of 25 and 30 by Listing Common Factors Therefore, the greatest common factor of 25 and 30 is 5.

**What is the HCF of 15 20 and 30?**

As you can see when you list out the factors of each number, 5 is the greatest number that 15, 20, and 30 divides into.