a pair.
With scent. During the breeding season, female snakes give of a scent that the males can 'home in' on.
depends on the snake but on a show i saw this one time it sed u can tell boas gender from their color but maybe not some also u can tell by there butt or something around there
Corn snakes can be male or female it doesnt have to be a certain one.
you stick your finger up its but and feel for the parts it has
It depends on the snake; for example: the female anaconda is larger than the male, but this is not always the case.