how to know available balance in itz cash card?

DATABASE ERROR:Table './financials_ccd1/questions' is marked as crashed and should be repaired
ERROR: Table './financials_ccd1/questions' is marked as crashed and should be repaired
MSG:Invalid SQL: SELECT count(*) FROM questions WHERE id='20090301193754AA0EubH'

Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in /home/financials/domains/creditcard.co.in/public_html/lib/database/mysql.class.php on line 78

Warning: mysql_free_result(): supplied argument is not a valid MySQL result resource in /home/financials/domains/creditcard.co.in/public_html/lib/database/mysql.class.php on line 84

DATABASE ERROR:Table './financials_ccd1/questions' is marked as crashed and should be repaired
ERROR: Table './financials_ccd1/questions' is marked as crashed and should be repaired
MSG:Invalid SQL: INSERT INTO questions 
                                    (id,subject,last_date) 
                      VALUES 
                                    ('20090301193754AA0EubH',
                                     'how to know available balance in itz cash card?',   
                                                    UNIX_TIMESTAMP())