IN MATH: 1. n. a number used to indicate place or position within a set or group, ie. first, second, ... EX. In the parade above, Marcher A is first.

IN ENGLISH: 1. as defined above.

APPLICATION: (see list 10)

1. What's the seventh prime number if the primes are ordered from smallest to largest?

2. What's the 5th cube (number which is the cube of a natural number)?

3. What's the 9th perfect square?

4. Name the 5th place to the left of the decimal.

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