user: Question: Which Number of electorates (2009) has a District of jhajjar, and a Reserved for (sc/ST/None) of sc, and a Constituency number smaller than 66?
Columns: ['Constituency number', 'Name', 'Reserved for ( SC / ST /None)', 'District', 'Number of electorates (2009)']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [60.0, 'Meham', 'None', 'Rohtak', 144421.0]
SQL:

assistant: SELECT "Number of electorates (2009)" FROM "Table" WHERE "District" = 'jhajjar' AND "Reserved for ( SC / ST /None)" = 'sc' AND "Constituency number" < 66.0;