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HCF of two numbers a & b is b if a is divisible by b.
Here, 90 is divisible by 45 so HCF is 45.
Alternate Methods:
1-
Prime factorization of 45 = 3x3x5
Prime factorization of 90 = 2x3x3x5
From the factorization it is clear that GCF = 3x3x5 = 45
2-
Factors of 45 are 1, 3, 5, 9, 15 & 45.
Factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 30, 45 & 90.
Common factors are 1, 3, 5, 9, 15 and 45 and the greatest common factor is 45.
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∙ 12y ago
Anonymous
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What is the HCF of 45 90 and 105?
The GCF is 15.
What is the HCF of 90 and 210?
The GCF is 30.
What is HCF and LCM of 30 and 45?
To find the HCF you first need to break the numbers down into their prime factors. In this case we have: 30 = 2x3x5 45 = 3x3x5 The next step is to identify any common factors. In this case both numbers have 3 and 5 as prime factors. To find the HCF, multiply these together: 3x5 = 15. To get the LCM, multiply the numbers together then divide by the HCF: 30x45/15 = 90.
What is the hcf of 90 and 105?
The hcf is 15.
What is the HCF of 45 and 99?
9
What is the HCF of 45 90 and 105?
The GCF is 15.
What is the HCF of 45 and 40?
The hcf of 45 and 40 is 5.
What is the HCF of 4 and 90?
The HCF of 4 and 90 is 2.
What is the HCF of 315 and 720?
The GCF is 45.
What is the HCF of 90 and 126?
The GCF is 18.
What is the HCF of 90 and 210?
The GCF is 30.
What is the HCF of 90 and 160?
HCF(160, 90) = 10.
What are the HCF of 45 9 and 8?
The HCF is 1.
What is the HCF of 5 and 9?
The GCF is 1.
What is the HCF of 26 and 45?
HCF(26, 45) = 1. The numbers are co-prime.
What is the HCF of 75 and 45?
The GCF is 15.
What is the greatest common factor of 45 90 75?
gcf(75, 45, 90) = 15 Using prime factorization: 75 = 3 x 5² 45 = 3² x 5 90 = 2 x 3² x 5 hcf = 3 x 5 = 15
