The letter n.
"n"
The letter "n"
Units of time - century, year, month, week, day, hour, minute, second.
second, minute, hour, day, week, fortnight, month, year, decade, century, millennium.
Second, minute, hour, day, week, month, year, century, millenium, millisecond, microsecond, nanosecond, etc.
The Letter 'n'
second, minute, hour, day, week, month, year, decade, century, millennium, era, year line
Planck time, nano second, microsecond, millisecond, second, minute, hour, day, week, fortnight, month, year, decade, century, millennium are some.
A second, minute, hour, day, week, fortnight, month, year, decade, century, millennium are some.
second , minute ,hour, day, century , year , week ,month, fortnight, awhile ,forever, wait, hurry, fast, slow, speedy ,etc ...
The letter N -- although, strictly speaking, the letter N does occur once in "an hour."
The letter 'n'. not very mathematical.