face
A plane surface of a three-dimensional object.
face value
The numeral itself despite its position in the number (e.g., the face value of 5 in 3,520 is 5).
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factor
The whole numbers that can be divided exactly into a given number. The factors of 12 are 6, 4, 3, 2, 1 and 12.
factorial
The product of all the integers from 1 up to the integer in question. The (!) exclamation point is used to mean factorial.
fibonacci sequence
The sequence in which every number is the sum of the two preceding numbers: 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377....
finite
Anything that has boundaries or can be counted.
fraction
An amount expressed in terms of a numerator and a denominator (usually part of a whole).
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frequency distribution
A graph or table showing how often an event or quantity occurs.
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