Hence, HCF = 1.
What is the HCF of 12 and 15 and 21?
3
The highest number that divides 12, 15, and 21 exactly is their highest common factor. The HCF of 12, 15, and 21 is 3.
What is the HCF of 12 45 and 85?
1 is the only highest common factor of 12,45,85…
How is HCF calculated?
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.
What is the HCF of 12?
Factors of 12 = 1, 2, 3, 4, 6 and 12. Factors of 18 = 1, 2, 3, 6, 9 and 18. Therefore, common factor of 12 and 18 = 1, 2, 3 and 6. Highest common factor (H.C.F) of 12 and 18 = 6 [since 6 is the highest common factor].
What is the HCF of 15?
Factors of 15 (Fifteen) = 1, 3, 5 and 15. Factors of 35 (Thirty five) = 1, 5, 7 and 35. Therefore, common factor of 15 (Fifteen) and 35 (Thirty five) = 1 and 5. Highest common factor (H.C.F) of 15 (Fifteen) and 35 (Thirty five) = 5.
What is the HCF of 16 and 21?
1
Prime factorization of 16 and 21 is (2 × 2 × 2 × 2) and (3 × 7) respectively. As visible, there are no common prime factors between 16 and 21, i.e. they are coprime. Hence, the HCF of 16 and 21 will be 1.
What is the HCF of 9 15 and 24?
In 15, except 3 there is one 5 but not in 9 or 24. So, 5 cannot be a common factor. In 24 there are three 2s and one 3 but there are no two in 9 or 15. Therefore, GCF or 9, 15, and 24 are 3.
What is HCF example?
HCF : The largest number that divides two or more numbers is the highest common factor (HCF) for those numbers. For example, consider the numbers 30 (2 x 3 x 5), 36 (2 x 2 x 3 x 3), 42 (2 x 3 x 7), 45 (3 x 3 x 5). 3 is the largest number that divides each of these numbers, and hence, is the HCF for these numbers.
What is the HCF of 15 18 and 30?
Since, we are asked the greatest common factor, we can say that the greatest common factor of 15 , 18 and 30 is 3 as 3 is the greatest number in the list of common factors of all the three numbers. So, the correct answer is “ 3 ”.
What is the HCF of 32 and 48?
16
There are 5 common factors of 32 and 48, that are 1, 2, 4, 8, and 16. Therefore, the greatest common factor of 32 and 48 is 16.
What is the HCF of 10 and 15?
HCF of 10 and 15 by Prime Factorization As visible, 10 and 15 have only one common prime factor i.e. 5. Hence, the HCF of 10 and 15 is 5.
What is the HCF of 12 45?
The highest number that divides 12, 45, and 75 exactly is their highest common factor. The HCF of 12, 45, and 75 is 3. ∴ The highest number that divides 12, 45, and 75 is 3.
What is the HCF of 75?
Factors of 75 (Seventy five) = 1, 3, 5, 15, 25 and 75. Factors of 125 (One hundred twenty five) = 1, 5, 25, and 125. Therefore, common factor of 75 (Seventy five) and 125 (One hundred twenty five) = 1, 5 and 25. Highest common factor (H.C.F) of 75 (Seventy five) and 125 (One hundred twenty five) = 25.
What is the HCF of 100?
Factors of 100 = 1, 2, 5, 10, 20, 50 and 100. Factors of 150 (one hundred fifty) =1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75 and 150. Therefore, common factor of 100 and 150 = 1, 2, 3, 5, 10 and 50. Highest common factor (H.C.F) of 900 and 270 = 50.
