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### Naming N-Tuples (Single, Double, etc.)

```
Date: 05/15/2000 at 11:42:19
From: Vincent Prewitt
Subject: About single, double, triple, etc.

One is single, two is double, three is triple, four is quadruple, five
is quintuple, six is sextuple. What are seven, eight, nine, and ten?
```

```
Date: 05/15/2000 at 12:21:38
From: Doctor Peterson
Subject: Re: About single, double, triple, etc.

Hi, Vincent.

These forms parallel the (Latin) prefixes used for large numbers; see
our archive entry, Names for Big Numbers, at:

http://mathforum.org/dr.math/problems/kesselheim2.11.97.html

The answers are: septuple, octuple, nonuple, decuple.

- Doctor Peterson, The Math Forum
http://mathforum.org/dr.math/
```

```
Date: 05/16/2000 at 11:26:49
From: Vincent Prewitt
Subject: Re: About single, double, triple, etc.

You gave me the answer about single, double, triple, etc. for seven,
eight, nine, and ten. Can you give me eleven through twenty?
```

```
Date: 05/16/2000 at 11:50:43
From: Doctor Peterson
Subject: Re: About single, double, triple, etc.

Hi, Vincent.

As for the high-number n-tuples, even those I gave you are not used
often; You might just take my suggestion and look at the standard
Latin prefixes, invent what you think the words ought to be, and then
check a (big) dictionary to see if they are considered real. That's

- Doctor Peterson, The Math Forum
http://mathforum.org/dr.math/
```
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