It was suggested that the Greek symbol for the letter "P" (Pi) be attached to this mysterious number by William Jones, a Welsh mathematician in the early 18th century. There is no logical explanation as to why this symbol was chosen.
a an
When someone uses their voice to communicate words instead of singing them, it is called speaking.
a or an
rather, preferably, alternately
you are not
next
two
Like
you can use or , otherwise, or rather than.
Three other words instead of saw : stared looked watched
since
Also In Addition [to] Plus