HCF of 3 and 9 | How to Find HCF of 3 and 9 (2024)

FAQs

HCF of 3 and 9 | How to Find HCF of 3 and 9? ›

The HCF of 3 and 9 is 3. To calculate the HCF (Highest Common Factor) of 3 and 9, we need to factor each number (factors of 3 = 1, 3; factors of 9 = 1, 3, 9) and choose the highest factor that exactly divides both 3 and 9 . i.e 3.

The highest common factor is found by multiplying all the factors which appear in both lists: So the HCF of 60 and 72 is 2 × 2 × 3 which is 12. The lowest common multiple is found by multiplying all the factors which appear in either list: So the LCM of 60 and 72 is 2 × 2 × 2 × 3 × 3 × 5 which is 360.

FAQs on LCM of 3 and 9

The LCM of 3 and 9 is 9. To find the least common multiple (LCM) of 3 and 9, we need to find the multiples of 3 and 9 (multiples of 3 = 3, 6, 9, 12; multiples of 9 = 9, 18, 27, 36) and choose the smallest multiple that is exactly divisible by 3 and 9, i.e., 9.

HCF can be evaluated for two or more than two numbers. It is the greatest divisor for any two or more numbers, that can equally or completely divide the given numbers. For Example: The Highest common factor of 60 and 75 is 15 because 15 is the largest number which can divide both 60 and 75 exactly.

Ans: There are 4 primary methods for finding the HCF and LCM: HCF by Prime Factorisation Method. HCF by Division Method. LCM by Prime Factorisation Method.

The formula of HCF and LCM is: Product of two numbers = LCM of two numbers x HCF of two numbers. The following formulas can be deduced from the HCF and LCM Formula. HCF of two numbers = Product of two numbers/ LCM of two numbers.

Factors of 9 = 1, 3, 9.

To find the HCF of two or three given numbers, divide the greater number by the smaller one. Then divide the divisor by the remainder. Go on repeating the process of dividing the preceding divisor by the remainder, till zero remainder is obtained. The last divisor'is the HCF of the given numbers.

Find the prime factors of each of the given number. Next, we identify the common prime factors of the given numbers. We then multiply the common factors. The product of these common factors is the HCF of the given numbers.

What is the HCF of 3 and 8? ›

The Highest Common Factor (HCF) of 3 and 8 is 1, and the Least Common Multiple (LCM) of 3 and 8 is 24.

The HCF of 2 and 3 is 1. To calculate the highest common factor of 2 and 3, we need to factor each number (factors of 2 = 1, 2; factors of 3 = 1, 3) and choose the highest factor that exactly divides both 2 and 3, i.e. 1.

The only common prime factor of 3 and 6 is 3. Hence, the HCF of 3 and 6 is 3.