Number of Distinct Institutes

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You have a table Participants, with 3 columns, as follows: ``` Participants ( username VARCHAR(255), rating INT, institution VARCHAR(255) ); ``` Your task is to output the number of distinct institutions from which there have been participants. Have the column header in the output as "Number of Distinct Insti". --- ### Example: Suppose this was the table: ``` ┌──────────┬───────

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