Apple iWork '09 - Manual (Page 167)

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The numeric functions help you to calculate commonly used
mathematical values.
Listing of Numeric Functions
iWork provides these numeric functions for use with tables.
Function Description
“ABS” (page 170) The ABS function returns the absolute value of a
number or duration.
“CEILING” (page 170) The CEILING function rounds a number away
from zero to the nearest multiple of the specified
factor.
“COMBIN” (page 172) The COMBIN function returns the number of
different ways you can combine a number of
items into groups of a specific size, ignoring the
order within the groups.
“EVEN” (page 173) The EVEN function rounds a number away from
zero to the next even number.
“EXP” (page 174) The EXP function returns e (the base of natural
logarithms) raised to the specified power.
“FACT” (page 174) The FACT function returns the factorial of a
number.
“FACTDOUBLE” (page 175) The FACTDOUBLE function returns the double
factorial of a number.
“FLOOR” (page 176) The FLOOR function rounds a number toward
zero to the nearest multiple of the specified
factor.
“GCD” (page 177) The GCD function returns the greatest common
divisor of the specified numbers.
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Numeric Functions