Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '-10, 10' at line 1 in /home/u308017925/domains/indiags.com/public_html/subjectquiz.php:86 Stack trace: #0 /home/u308017925/domains/indiags.com/public_html/subjectquiz.php(86): mysqli_query() #1 {main} thrown in /home/u308017925/domains/indiags.com/public_html/subjectquiz.php on line 86