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How do you work out the hcf of 210 and 385?
Prime factors of 210 are: 2, 3, 5 and 7 Prime factors of 385 are: 5,7 and 11 Common factors are: 5 and 7 and so 5*7 = 35 which is the hcf
What are three pairs of numbers that have a LCM of 30 and a HCF of 1?
30 & 1. 15 & 2. 10 & 3.
What is the highest common factor of 63 and 18?
To find the highest common factor (hcf) of 2 numbers you need to consider the list of factors for each number. Finding factors is easier if you think about them in pairs (the two factors that have the original number as their product) and start with the lowest first (i.e. 1 and itself then consider 2, 3 etc.) Factors of 34 are: 1 and 34; 2 and 17 The factors of 63 are: 1 and 63; 3 and 21; 7 and 9 Now identify any numbers that are in both lists of factors - these are common factors and the highest value one is the hcf. In this case there is only one cf so 1 is the hcf of 34 and 63.
What are the highest common factors of 110 and 250?
The GCF is 10.
What 2 numbers have LCM of 20 and HCF of 2?
2 and 20 have an HCF of 2 and an LCM of 20. You could also use 4 and 10.
How many pairs of number exit such that their LCM is 240 and HCF is 16?
One pair.
What is the hcf of 18 24?
The GCF is 6.
What pair of numbers have a HCF of 30?
There are infinitely many pairs. One possible pair is 30 and 60.
What is the HCF of 16 and 25?
Factors of 16 are 1,2,4,8 & 16... Factors of 25 are 1,5 & 25. Therefore the HCF is 1 !
HCF of a 100?
Factors of 1001,1002,504,255,2010
What is the HCF of 8 and 18?
factors of 8: 1, 2, 4, 8 factors of 18: 1, 2, 3, 6, 9, 18 HCF: 2
What are the prime factor of HCF?
Each HCF has its own set of prime factors.
What numbers have an HCF of 1?
An HCF is the product of any common prime factors of two numbers. If two numbers have no common prime factors, then the HCF will be 1. For example, 10 and 21. The prime factors are 2x5 and 3x7. There is nothing in common, and so the HCF of 10 and 21 is 1. Two consecutive numbers will always have the HCF of 1.
What is the HCF of 24 and 90?
Factors of 24: 1,2,3,4,6,8,12 and 24. Factors of 90: 1,2,3,5,9,10,18,30,45 and 90. The HCF (highest common factor) is 3.
What is the hcf of 196?
i really need help on maths home work can you help me thank you the maths is hcf of prime factors of 196 60 and 28 primes factors 735 and 639 prim factors
Is the HCF of 140 and 210 2?
No. The prime factors of 140 are 2,2,5 and 7 The prime factors of 210 are 2,3,5 and 7 The common prime factors are 2,5 and 7 Thus the HCF is 2x5x7, or 70.
What are all the pairs of numbers that have a HCF of 30 and LCM of 3150?
(30, 3150), (90,1050), (150, 630) and (210, 450).
