Question

what is co-prime? Give example of five pair of co prime. Are co primes always primes? If no,illustrate your answer by an example. ​

Answer 1

${\huge{\bold{\blue{Co-Prime}}}}$

two numbers are termed as co-prime whenever two number share no common factor.

${\huge{\bold{\red{Examples}}}}$

(3,5) (7,9) (10,13) (15,16) (17,19)

No, the co-prime are not always prime because the condition for a pair of number to be co-prime is that that should not share no common factor.

for example

let us take two co-prime number

27 and 64      factors of two numbers are

$27 = 3 \times 3 \times 3$

$64 = 4 \times 4 \times 4$

so they share no common factor so they are co-prime

but neither of them are prime number

Answer 2

Answer:

Two or more numbers that do not have a factor that is common to each of the numbers except 1 are called co-prime numbers or we can say that two or more numbers are co prime if they do not have any factor common to them other than 1.

Step-by-step explanation:

eg 8 and 15.