(dramatic orchestral music) (air swooshes) (magic chimes) (Springling boinging) (Dotsan screaming) - [Kids] Math Mights. - Welcome Math Mights, Mrs. Markovich here, and we've got a whole lot of fun ...

An old joke holds that anyone with two mobile phones is either dealing drugs or having an affair – but in fact, there are plenty of legitimate reasons why you’d want to maintain two separate numbers.