The word 'nth' is correct and usable in written English.
You can use it when referring to an unspecified ordinal number in a series, to indicate a very large quantity, or to mean 'to the utmost degree'. Example sentence: She was the nth person I had to remind about the meeting.
To highlight the close Baghdad-Tehran times, the Iranian president, Mahmoud Ahmadinejad, reiterated his support for the Maliki government for the nth time at his press conference on Tuesday.
The graphic novel on which the film is based (by Alan Moore and David Lloyd) is the nth retelling of "The Count of Monte Cristo".
However, although the properties of these basic chemical reactions have been measured and understood to the nth degree, no one has been able to show from first principles exactly why lead and lead dioxide tend to be so electropositive and electronegative.
Consultants have rethought strategy to the nth degree but seldom furrow their brows about sales.It shows.
This "don't talk down the kids" problem helps explain why generations of education secretaries, both Conservative and Labour, could be heard each year on the BBC hailing the news that for the nth year in a row record numbers of children had just passed GCSEs or obtained A grades in their pre-university A-levels.
Tn is the number of days between the nth attack and its successor.
(For a derivation of equation (2), observe that in order to draw exactly i red balls in n draws one must either draw i red balls in the first n − 1 draws and a black ball on the nth draw or draw i − 1 red balls in the first n − 1 draws followed by the ith red ball on the nth draw.
To see this, observe that the nth customer must wait for the same length of time as the (n − 1 th customer plus the service time of the (n − 1 th customer minus the time between the arrival of the (n − 1 th and nth customer, during which the (n − 1 th customer is already waiting but the nth customer is not.
For example, let X0 = x, and for n ≥ 1 let Xn equal 1 or −1 according as a coin having probability p of heads and q = 1 − p of tails turns up heads or tails on the nth toss.
In the oracular sentences of the last Shang king, Chou Hsin, the year of his reign is referred to as "the King's nth annual sacrifice".
Taylor series, in mathematics, expression of a function f for which the derivatives of all orders exist at a point a in the domain of f in the form of the power series∑ ∞n = 0 f (n) (a) (z − a n/n!in which Σ denotes the addition of each element in the series as n ranges from zero (0) to infinity, f (n) denotes the nth derivative of f, and n! is the standard factorial function.
