Question: let f ( x , y ) be defined as the remainder when ( x – y ) ! is divided by x . if x = 24 , what is the maximum value of y for which f ( x , y ) = 0 ?
A) 12
B) 15
C) 18
D) 20
E) 21
Correct answer: d
Grade: 6 | Topic: Number System | Difficulty: Hard | Standard: 6.NS.B.4