Question

Show that the following numbers are co-primes:
161,192

Answer 1

Numbers are co-primes if their HCF$=1$

$7|161$ $2|192$

__________ _____________

$23|23$ $2|96$

__________ _____________

$1$ $2|48$

______________

$2|24$

______________

$2|12$

_____________

$2|6$

_____________

$3|3$

_____________

$1$

HCF$=1$

Yes, they are co-primes.