Casio CLASSPAD 330 3.04 - Manual (Page 768)

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S List-Calculation - sum
Function: Returns the sum of the values contained in the range of specified cells.
Syntax: sum(start cell:end cell[,start cell:end cell])
Example: To determine the sum of the values in the block whose upper left corner is
located at A7 and whose lower right corner is located at C12, and input the result
in cell A1:
S List-Calculation - prod
Function: Returns the product of the values contained in the range of specified cells.
Syntax: prod(start cell:end cell[,start cell:end cell])
Example: To determine the product of the values in cells A7 and A8, and input the result in
cell A1:
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Cell and List Calculations