find the hcf of 21 and 45 by prime factorization
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Step-by-step explanation:
To find the GCF of 21 and 45, we will find the prime factorization of the given numbers, i.e. 21 = 3 × 7; 45 = 3 × 3 × 5. ⇒ Since 3 is the only common prime factor of 21 and 45.
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Answer:
21=3×7
45=3×3×5
hcf=3
Step-by-step explanation:
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