1, 5, and 3
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To find the HCF of two numbers you first need to express them as the product of their prime factors. In this case you'd get: 45 = 3x3x5 60 = 2x2x3x5 The next step is to identify any common prime factors. In this case both numbers have a 3 and a 5 as a prime factor. Multiplying these together gives: 3x5 = 15 And so 15 is the HCF of 45 and 60.
number of prime numbers between 45 and 60 = 3 prime numbers between 45 and 60 = 47 53 59
The prime numbers between 35 and 45 are 37, 41, and 43.
The prime numbers between 45 and 65 are: 47, 53, 59 and 61
To find the GCF of two numbers, you first split them both into their prime factors. 45 = 3x3x5 60 = 2x2x3x5 The next step is to find the common prime factors. In this case, both numbers have one 3 as a factor, and both have one 5 as a factor. To get the greatest common factor, we find the product of these common prime factors: 5x3=15 Thus the greatest common factor of 45 and 60 is 15.