for any number y , y * is defined as the greatest positive even integer less than or equal to y . what is the value of 6.2 – 6.2 * ?
"since y * is defined as the greatest positive even integer less than or equal to y , then 6.2 * = 4 ( the greatest positive even integer less than or equal to 6.2 is 4 ) . hence , 6.2 – 6.2 * = 6.2 - 4 = 2.2 answer : d ."
subtract(6.2, subtract(floor(6.2), const_1))