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Question
The HCF of 13 & 7 is
Options:
A .  13
B .  7
C .  1
D .  91
Answer: Option C
:
C
Factors of 13:1, 13
Factors of 7:1, 7
The only common factor is 1.
Hence the HCF of 13 and 17 is 1.

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