Question : What is the HCF of two prime numbers X and Y?
Option 1: 1
Option 2: 2
Option 3: Y
Option 4: X
Correct Answer: 1
Solution :
X and Y (which are prime numbers) are only divisible by 1 and themselves.
So, the highest common factor(HCF) is 1.
Hence, the correct answer is 1.
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