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Question
Two numbers having _____ as the only common factor are called ________ numbers.
Options:
A .  2, twin prime
B .  2, co-prime
C .  1, co-prime
D .  1, twin prime
Answer: Option C
:
C
Two numbers having 1 as the onlycommon factor are called co-prime numbers.
For example, 16 and 35 are co-prime number.
Factors of 16: 1, 2, 4, 8, 16
Factors of 35: 1, 5, 7, 35
Here, 1 is the only common factor.

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