Three children, A, B, and C, respectively play Gray Taro, Little Red Riding Hood, and grandma. How many roles are there?
甲、乙、丙3个小朋友，分别演灰太郎，小红帽，外婆，那么角色分配有多少种．
<gadget id="calculator">3 * 2 * 1</gadget>
<output>6</output>

<result>6</result>