" so-primes "

What are co-primes ? Give examples of five pairs of co-primes . Are co-primes always primes ? If no.illustrate your answer by an example .

What are co-primes? Give examples of five pairs of co-primes. Are co-primes always prime? If no, illustrate your answer by an example.

H.C.F. of co-prime numbers 4 and 15 was found as follows:factorisation : 4=2xx 2 and 15= 3 xx 5 .since there is no common prime factor,so H.C.F. of 4 anb 15 is 0.Is the answer correct?If not,what is the correct H.C.F ?

1) what is the HCF of 2 consecutive numbers (i) numbers (ii)even nos (iii)odd nos 2) HCF of co-prime numbers 4 and 15 was found as follows by factorisation: and since there is no common prime factor,so HCF of 4 and 15 is 0. Is the answer correct? If not,what is the correct HCF?

H.C.F.of co-prime numbers 4 and 15 was found as follows: 4=2x2 and 15=3x5 since there is no common prime factor.So, H.C.F.of 4 and 15 is 0. Is the answer correct? If not,what is the correct H.C.F.?

H.C.F. of co-prime numbers 4 and 15 was found as follows: 4=2\ *\ 2\ a n d\ 15=3\ *\ 5 Since there is no common prime factor. So, H.C.F. of 4 and 15 is 0. Is the answer correct? If not, what is the correct H.C.F.?

State true (T) or false (F): The sum of primes cannot be a prime. The product of primes cannot be a prime. An even number is composite. Two consecutive numbers cannot be both primes. Odd numbers cannot be composite. Odd numbers cannot be written as sum of primes. A number and its successor are always co-primes.

State true (T) or false (F): The sum of primes cannot be a prime. The product of primes cannot be a prime. An even number is composite. Two consecutive numbers cannot be both primes. Odd numbers cannot be composite. Odd numbers cannot be written as sum of primes. A number and its successor are always co-primes.

What are co-primes? Give examples of five pairs of co-primes.Are co-primes always prime? If no,illustrate your answer by an example.