Question

Show that the following pairs are co-primes
385,621

Answer 1

$5|385$ $3|621$

____________ ___________

$7|77$ $3|207$

____________ ___________

$11|11$ $3|69$

____________ ___________

$1$ $23|23$

___________

$1$

HCF$=1$

They are co-primes.