Question

Example for co-prime numbers from the below options is ?

• A. $25,14$
• B. $18,16$
• C. $9,18$
• D. $11,77$

Answer 1

The correct option is A $25,14$

The two numbers which have only 1 as their common factor are called co-primes.

Out of the given pair of numbers,
Factors of $25$ are $1,5,25$
Factors of $14$ are $1,2,7,14$
Their common factor is $1$.
Hence $25,14$ are co-prime numbers.

While other options has common factors other than $1$.

For option $B$ the common factor is $2$.

For option $C$ the common factor is $3$.

For option $D$ the common factor is $11$.