Count
 Usage
Notes
 Further Examples
This counts the number of occurrences of positive numbers in a list.
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This counts the number of occurrences of Real numbers in the list. (An Integer is not considered to be Real, any more than a Real is considered to be Complex.)
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This command returns the number of summands that are powers. (Note that the first argument to Count need not be a list.)
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This returns the number of expressions that occur in the sum at any level and are powers. This count is higher; the actual matches can be seen by replacing Count with Cases.
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Here is a list of  's and  's.
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This counts the number of occurrences of a  in ww immediately followed by a  .
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