Let A and B be the sets intentionally described as follows: A is the set all whose elements are the lower
case letters of the English alphabet that appear before the letter "g", and B is the set obtained by taking
the union of the set whose only element is the lower case letter "b" and the set all whose elements are the
prime natural numbers that do not exceed 10. (Remember that a prime number is by definition greater
than 1.) All the following are binary relations from A to B described extensioanlly. Choose all those that
are fully-defined..
{(a,2), (a,b), (a,3), (a,5), (a,7)}
{(b,b), (b,2), (c,3)}
{(a,2), (b,3), (c,5), (d,b), (e,2), (f,2), (a,7), (b,7), (c,5)}
{(a,2), (b,3), (c,5), (d,7), (e,b)}
{(a,b), (b,b), (c,b), (d,b), (e,b), (f,b)}
{(a,2), (a,b), (a,3), (a,5), (a,7), (b,2), (b,b), (b,3), (b,5), (b,7)}
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