Question

Determine the HCF of the given numbers
bg prime factorisation method
(a)225,550

Answer 1

Answer:

HCF of   225 and  550

225 =  3 * 3 * 5 * 5  

550 =  2 * 5 * 5 * 11

HCF  =  5 * 5

HCF  =  25

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Answer 2

Step-by-step explanation:

225 = 32 × 52;

550 = 2 × 52 × 11;

Multiply all the common prime factors, by the lowest exponents.

Greatest (highest) common factor (divisor):

gcf, hcf, gcd (225; 550) = 52

gcf, hcf, gcd (225; 550) = 52 = 25;

the numbers have common prime factors

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